Colombia has a land size of 1,141,748km2 (440,831sqmi) and it is the 25th largest nation in the world and the fourth-largest country in South America (after Brazil, Argentina, and Peru).[4] Colombia's population is not evenly distributed, and most of the people live in the mountainous western portion of the country as well as along the northern coastline; the highest number live in or near the capital city of Bogotá. The southern and eastern portions of the country are sparsely inhabited, consisting of tropical rainforest, and inland tropical plains that contain large estates or large livestock farms, oil and gas production facilities, small farming communities, and indigenous tribes with their territories. Colombia has the 35th largest Exclusive Economic Zone of 808,158km2 (312,032sqmi).
Main
Colombia usually classifies its geography into five natural regions, from the Andes mountain range, a region shared with Ecuador, Venezuela; the Pacific Oceancoastal region, shared with Panama and Ecuador; the Caribbean Sea coastal region, shared with Venezuela and Panama; the Llanos (plains), shared with Venezuela; to the Amazon Rainforest region shared with Venezuela, Brazil, Peru and Ecuador. Colombia is one of only two South American countries that have coastline on both the Atlantic and Pacific oceans, the other being Chile.
The World Factbook does not differentiate between the Amazon region of Colombia (predominantly jungle) and the Orinoquia region of Colombia (predominantly plains). It suggests dividing the country into four geographic regions: the Andean highlands, consisting of the three Andean ranges and intervening valley lowlands; the Caribbean lowlands coastal region; the Pacific lowlands coastal region, separated from the Caribbean lowlands by swamps at the base of the Isthmus of Panama; and eastern Colombia, the great plain that lies to the east of the Andes Mountains.
The chief western mountain range, the Cordillera Occidental, is a moderately high range with peaks reaching up to about 15,000ft (4,572m) (4,670 m).[5] The Cauca River Valley, an important agricultural region with several large cities on its borders, separates the Cordillera Occidental from the massive Cordillera Central. Several snow-clad volcanoes in the Cordillera Central have summits that rise above 17,000ft (5,182m). The valley of the slow-flowing and muddy Magdalena River, a major transportation artery, separates the Cordillera Central from the main eastern range, the Cordillera Oriental. The peaks of the Cordillera Oriental are moderately high. This range differs from Colombia's other mountain ranges in that it contains several large basins. In the east, the sparsely populated, flat to gently rolling eastern lowlands called llanos cover almost 60 percent of the country's total land area.
This cross section of the republic does not include two of Colombia's regions: the Caribbean coastal lowlands and the Sierra Nevada de Santa Marta, both in the northern part of the country. The lowlands in the west are mostly swampy; the reed-filled marshes of the area are called ciénagas by the people of Colombia. The Guajira Peninsula in the east is semiarid and is occupied primarily by indigenous peoples. The Sierra Nevada de Santa Marta is a spectacular triangular snowcapped block of rock that towers over the eastern part of this lowland. Here can be found the highest peak of the country, named Pico Cristobal Colon (5775 m).[5]
Near the Ecuadorian frontier, the Andes Mountains divide into three distinct, roughly parallel chains, called cordilleras, that extend northeastward almost to the Caribbean Sea. Altitudes reach more than 18,700ft (5,700m), and mountain peaks are permanently covered with snow. The elevated basins and plateaus of these ranges have a moderate climate that provides pleasant living conditions and in many places enables farmers to harvest twice a year. Torrential rivers on the slopes of the mountains produce a large hydroelectric power potential and add their volume to the navigable rivers in the valleys. In the late 1980s, approximately 78 percent of the country's population lived in the Andean highlands.
The Cordillera Occidental in the west, the Cordillera Central in the center, and the Cordillera Oriental in the east have different characteristics. Geologically, the Cordillera Occidental and the Cordillera Central form the western and eastern sides of a massive crystalline arch that extends from the Caribbean lowlands to the southern border of Ecuador. The Cordillera Oriental, however, is composed of folded stratified rocks overlying a crystalline core.
The Cordillera Occidental is relatively low and is the least populated of the three cordilleras. Summits are only about 9,840ft (2,999m) above sea level and do not have permanent snows. Few passes exist, although one that is about 4,985ft (1,519m) above sea level provides the major city of Cali with an outlet to the Pacific Ocean. The relatively low elevation of the cordillera permits dense vegetation, which on the western slopes is truly tropical.
The Cordillera Occidental is separated from the Cordillera Central by the deep rift of the Cauca Valley. The Río Cauca rises within 124mi (200km) of the border with Ecuador and flows through some of the best farmland in the country. After the two cordilleras converge, the Cauca Valley becomes a deep gorge reaching to the Caribbean lowlands.
The Cordillera Central is the loftiest of the mountain systems. Its crystalline rocks form a towering wall dotted with snow-covered volcanoes that is 500mi (805km) long. There are no plateaus in this range and no passes under 10,825ft (3,299m). The highest peak in this range, the Nevado del Huila, reaches 17,602ft (5,365m) above sea level. The second highest peak is a volcano, Nevado del Ruiz, which erupted violently on November 13, 1985. Toward its northern end, this cordillera separates into several branches that descend toward the Caribbean coast.
Between the Cordillera Central and the Cordillera Oriental flows the Magdalena River. This 1,600-kilometre-long (994mi) river rises near a point some 180km (112mi) north of the border with Ecuador, where the Cordillera Oriental and the Cordillera Central diverge. Its spacious drainage area is fed by numerous mountain torrents originating high in the snowfields. The Magdalena River is generally navigable from the Caribbean Sea as far as the town of Neiva, deep in the interior, but it is interrupted midway by rapids. The valley floor is very deep; nearly 800km (497mi) from the river's mouth the elevation is no more than about 300 meters (984ft).
In the Cordillera Oriental, at elevations between 2,500 and 2,700 meters (8,202 and 8,858ft), three large fertile basins and a number of small ones provide suitable areas for settlement and intensive economic production. In the basin of Cundinamarca, where the Spanish encountered the regional Chibcha Indians, the European invaders established the town of Santa Fe de Bogotá (present-day Bogotá) at an elevation of 2,650 meters (8,694ft) above sea level.
To the north of Bogotá, in the densely populated basins of Chiquinquirá and Boyacá, are fertile fields, rich mines, and large industrial establishments that produce much of the national wealth. Still farther north, where the Cordillera Oriental makes an abrupt turn to the northwest near the border with Venezuela, the Sierra Nevada de Cocuy, the highest point of this range, rises to 5,493 meters (18,022ft) above sea level. In the department of Santander, the valleys on the western slopes are more spacious, and agriculture is intensive in the area around Bucaramanga. The northernmost region of the range around Cúcuta is so rugged that historically it has been easier for residents here to maintain communications and transportation with Venezuela than with the adjacent parts of Colombia.
The basic plantation of Colombia is grassy and is near the equator which allows many tropical-like plants.
The Caribbean lowlands consist of all of Colombia north of an imaginary line extending northeastward from the Golfo de Urabá to the Venezuelan frontier at the northern extremity of the Cordillera Oriental. The semiarid Guajira Peninsula and Guajira–Barranquilla xeric scrub, in the extreme north, bear little resemblance to the rest of the region. In the southern part rises the Sierra Nevada de Santa Marta, an isolated mountain system with peaks reaching heights over 5,700 meters (18,701ft) and slopes generally too steep for cultivation.
The Caribbean lowlands region is in roughly the shape of a triangle, the longest side of which is the coastline. Most of the country's commerce moves through the cities of Cartagena, Barranquilla, Santa Marta, and the other ports located along this important coast. Inland from these cities are swamps, hidden streams, and shallow lakes that support banana and cotton plantations for major commodity crops, countless small farms, and, in higher places, cattle ranches.
The city of Cartagena is a petrochemical, seaport (#1 in the country), and tourist city (#1 in the country). Santa Marta is also a seaport and tourist city but it is smaller scale city in comparison. Barranquilla is located some 25 miles (40km) from the Caribbean coastline but it is a more developed city, with a greater number of industries and commercial places, widely known for its skilled workers in producing all forms of metalwork and accomplishing construction. Its inhabitants have the highest education level of the region. The city is famous as the starting point and focus of the region and the country's development: it was the first city in the nation to install and use telephones, public lighting, air mail, planes, and industrial works.
The Caribbean region merges next to and is connected with the Andean highlands through the two great river valleys. After the Andean highlands, it is the second-most important region in terms of economic activity. Approximately 17% of the country's population lived in this region in the late 1980s.
The region also includes the peninsular archipelago of San Andres Island and the Insular Territories of Colombia, which are disputed in part by Nicaragua. However, the Colombian Navy protects such territories with the use of force when necessary to avoid foreign invasion. The islands are fortified with two important bases for defense and custom controls. These were formerly used for research of classified projects with civilian assistance; the local universities often conduct research in the areas of oceanography and marine biology but also in the fields of biochemistry, genetics and immunology. Colombia is known for its advances in medical fields in experimental surgery, breast implant development, or prosthetics, and immunology. These facilities serve as containment and secure experimentation labs to complement those in Barranquilla and other undisclosed locations within the coast territories.
The western third of the country is the most geographically complex. Starting at the shore of the Pacific Ocean in the west and moving eastward at a latitude of 5 degrees north, a diverse sequence of features is encountered. In the extreme west are the very narrow and discontinuous Pacific coastal lowlands, which are backed by the Serranía de Baudó, the lowest and narrowest of Colombia's mountain ranges. Next is the broad region of the Río Atrato/Río San Juan lowland.
In 1855, William Kennish, an engineer and veteran of the British Royal Navy, who had immigrated to the United States and was working for a New York City firm, studied the area and proposed an inter-oceanic river aqueduct and tunnel to connect the Rio Atrato, with its mouth at the Atlantic Ocean, with tributaries and through a tunnel and aqueduct through Nerqua Pass, to flow into Bahía Humboldt at the Pacific Ocean.[6][7][8]
This was his alternative to the canal that was eventually built further west on the isthmus of what became Panama after it gained independence in the early 20th century. Although the US sent an expedition to explore Kennish's proposal, the concept was not developed at the time. Colombia refused a later US offer to build a canal. After independence, in 1903 Panama made a treaty with the US to support construction of the Panama Canal. Colombia occupies most of the Andes mountain range northern extremity, sharing a bit with Venezuela; the range splits into three branches between the Colombia-Ecuador border.
In the 1980s, only three percent of all Colombians resided in the Pacific lowlands, a region of jungle and swamp with considerable but little-exploited potential in minerals and other resources. Later in the 20th century, it was threatened by mining-related deforestation, as gold mining proceeded by both major companies and artisan miners. Buenaventura is the only port of any size on the coast. To the east, the Pacific lowlands are bounded by the Cordillera Occidental, from which numerous streams run. Most of the streams flow westward to the Pacific, but the largest, the navigable Río Atrato, flows northward to the Golfo de Urabá. Its river settlements have access to the major Atlantic ports and consequently are commercially related primarily to the Caribbean lowlands hinterland. To the west of the Río Atrato rises the Serranía de Baudó, an isolated chain of low mountains that occupies a large part of the region. Its highest elevation is less than 1,800 meters, and its vegetation resembles that of the surrounding tropical forest.
The Atrato Swamp, in Chocó Department adjoining the border with Panama, is a deep muck sixty-five kilometers in width. For years it has challenged engineers seeking to complete the Pan-American Highway. This stretch, near Turbo, where the highway is interrupted, is known as the Tapón del Chocó (Chocon Plug).
A second major transportation project in Chocó Department has been proposed. A second inter-oceanic canal would be constructed by dredging the Río Atrato and tributary streams and digging short access canals. Completion of either of these projects would do much to transform this region, although it could have devastating consequences on the fragile, tropical forest environment.
The area east of the Andes includes about 699,300 square kilometers or three-fifths of the country's total area, but Colombians view it almost as an alien land. The entire area, known as the eastern plains, was home to only two percent of the country's population in the late 1980s. The Spanish term for plains (llanos) can be applied only to the open plains in the northern part, particularly the Piedmont areas near the Cordillera Oriental, where extensive cattle raising is practiced.
The region is unbroken by highlands except in Meta Department, where the Serranía de la Macarena, an outlier of the Andes has unique vegetation and wildlife believed to be reminiscent of those that once existed throughout the Andes.
Many of the numerous large rivers of eastern Colombia are navigable. The Río Guaviare and the streams to its north flow eastward and drain into the basin of the Río Orinoco, a river that crosses into Venezuela and flows into the Atlantic Ocean. Those south of the Río Guaviare flows into the Amazon Basin. The Río Guaviare divides eastern Colombia into the llanos subregion in the north and the tropical rainforest, or selva, subregion in the south.
The striking variety in temperature and precipitation results principally from differences in elevation. Temperatures range from very hot at sea level to relatively cold at higher elevations but vary little with the season. At Bogotá, for example, the average annual temperature is 15°C (59°F), and the difference between the average of the coldest and the warmest months is less than 1°C (1.8°F). More significant, however, is the daily variation in temperature, from 5°C (41°F) at night to 17°C (62.6°F) during the day.
Colombians customarily describe their country in terms of the climatic zones: the area under 900 meters (2,953ft) in elevation is called the hot zone (tierra caliente), elevations between 900 and 1,980 meters (2,953 and 6,496ft) are the temperate zone (tierra templada), and elevations from 1,980 meters (6,496ft) to about 3,500 meters (11,483ft) constitute the cold zone (tierra fría). The upper limit of the cold zone marks the tree line and the approximate limit of human habitation. The treeless regions adjacent to the cold zone and extending to approximately 4,500 meters (14,764ft) are high, bleak areas (usually referred to as the páramos), above which begins the area of permanent snow (nevado).
About 86% of the country's total area lies in the hot zone. Included in the hot zone and interrupting the temperate area of the Andean highlands are the long and narrow extension of the Magdalena Valley and a small extension in the Cauca Valley. Temperatures, depending on elevation, vary between 24 and 38°C (75.2 and 100.4°F), and there are alternating dry and wet seasons corresponding to summer and winter, respectively. Breezes on the Caribbean coast, however, reduce both heat and precipitation.
Rainfall in the hot zone is heaviest in the Pacific lowlands and in parts of eastern Colombia, where rain is almost a daily occurrence and rain forests predominate. Precipitation exceeds 7,600 millimeters (299.2in) annually in most of the Pacific lowlands, making this one of the wettest regions in the world. The highest average annual precipitation in the world is estimated to be in Lloro, Colombia, with 13,299mm (523.6in).[9] In eastern Colombia, it decreases from 6,350 millimeters (250in) in portions of the Andean Piedmont to 2,540 millimeters (100in) eastward. Extensive areas of the Caribbean interior are permanently flooded, more because of poor drainage than because of the moderately heavy precipitation during the rainy season from May through October.
The temperate zone covers about 8% of the country. This zone includes the lower slopes of the Cordillera Oriental and the Cordillera Central and most of the intermontane valleys. The important cities of Medellín (1,487 meters or 4,879 feet) and Cali (1,030 meters or 3,379 feet) are located in this zone, where rainfall is moderate and the mean annual temperature varies between 19 and 24°C (66.2 and 75.2°F), depending on the elevation. In the higher elevations of this zone, farmers benefit from two wet and two dry seasons each year; January through March and July through September are the dry seasons.
The cold or cool zone constitutes about 6% of the total area, including some of the most densely populated plateaus and terraces of the Colombian Andes; this zone supports about one fourth of the country's total population. The mean temperature ranges between 10 and 19°C (50.0 and 66.2°F), and the wet seasons occur in April and May and from September to December, as in the high elevations of the temperate zone.
Precipitation is moderate to heavy in most parts of the country; the heavier rainfall occurs in the low-lying hot zone. Considerable variations occur because of local conditions that affect wind currents, however, and areas on the leeward side of the Guajira Peninsula receive generally light rainfall; the annual rainfall of 350 millimeters (13.8in) recorded at the Uribia station there is the lowest in Colombia. Considerable year-to-year variations have been recorded, and Colombia sometimes experiences droughts.
Colombia's geographic and climatic variations have combined to produce relatively well-defined "ethnocultural" groups among different regions of the country: the Costeño from the Caribbean coast; the Caucano in the Cauca region and the Pacific coast; the Antioqueño in Antioquia, Caldas, Risaralda, and Valle del Cauca departments; the Tolimense in Tolima and Huila departments; the Cundiboyacense in the interior departments of Cundinamarca and Boyacá in the Cordillera Oriental; the Santandereano in Norte de Santander and Santander departments; and the Llanero in the eastern plains. Each group has distinctive characteristics, accents, customs, social patterns, and forms of cultural adaptation to climate and topography that differentiates it from other groups. Even with rapid urbanization and modernization, regionalism and regional identification continued to be important reference points, although they were somewhat less prominent in the 1980s than in the nineteenth and early twentieth centuries.
Colombia's proximity to the equator influences its climates. The lowland areas are continuously hot. Altitude affects temperature greatly. Temperatures decrease about 3.5°F (1.9°C) for every 1,000-foot (305m) increase in altitude above sea level. Rainfall varies by location in Colombia, tending to increase as one travels southward. This is especially true in the eastern lowlands. For example, rainfall in parts of the Guajira Peninsula seldom exceeds 30in (762mm) per year. Colombia's rainy southeast, however, is often drenched by more than 200in (5,080mm) of rain per year. Rainfall in most of the rest of the country runs between these two extremes.
Altitude affects not only temperature, but also vegetation. In fact, altitude is one of the most important influences on vegetation patterns in Colombia. The mountainous parts of the country can be divided into several vegetation zones according to altitude, although the altitude limits of each zone may vary somewhat depending on the latitude.
The "tierra caliente" (hot land), below 1,000m (3,300ft), is the zone of tropical crops such as bananas. The tierra templada (temperate land), extending from an altitude of 1,000 to 2,000m (3,300 to 6,600ft), is the zone of coffee and maize. Wheat and potatoes dominate in the "tierra fría" (cold land), at altitudes from 2,000 to 3,200m (6,600 to 10,500ft). In the "zona forestada" (forested zone), which is located between 3,200 and 4,000m (10,500 and 13,100ft), many of the trees have been cut for firewood. Treeless pastures dominate the páramos, or alpine grasslands, at altitudes of 4,000 to 4,500m (13,100 to 14,800ft). Above 4,500m (14,800ft), where temperatures are below freezing, is the "tierra helada", a zone of permanent snow and ice.
Vegetation also responds to rainfall patterns. A scrub woodland of scattered trees and bushes dominates the semiarid northeast. To the south, savannah (tropical grassland) vegetation covers the Colombian portion of the llanos. The rainy areas in the southeast are blanketed by tropical rainforest. In the mountains, the spotty patterns of precipitation in alpine areas complicate vegetation patterns. The rainy side of a mountain may be lush and green, while the other side, in the rain shadow, may be parched.
Relief
Relief map of Colombia
The Andean range is located in Colombia from the southwest (Ecuador border) toward the northeast (Venezuela border) and is divided in the Colombian Massif (Macizo Colombiano) in three ranges (East Andes, Central Andes and West Andes) that form two long valleys, Magdalena and Cauca follow by the rivers of the same name.
The eastern half of Colombia, comprising more than half its territory, is plain and composed by savanna and rainforest, crossed by rivers belonging to the Amazon and Orinoco basins. The northern part, called the Llanos, is a savanna region, mostly in the Orinoco basin (therefore called also Orinoquía). The southern part is covered by the Amazon rain forest and belongs mostly to the Amazon basin. It is usually called Amazonía.
At the north and west of the Andes range there are some coastal plains. The Caribbean plains at the north and the Pacific plains at the west.
A recent global remote sensing analysis suggested that there were 553km² of tidal flats in Colombia, making it the 46th ranked country in terms of tidal flat area.[10]
Colombian Pacific Plains are among the most rainy parts in the world, chiefly at the north (Chocó).
The highest mountain in Colombia is not in the Andes but in the Caribbean plain: Sierra Nevada de Santa Marta with its highest points named Pico Cristobal Colon (5775 m) and Pico Simon Bolivar (same elevation). Other mountains in the Caribbean plain include the Montes de María and the Serranía de San Lucas.
The natural resources of Colombia are varied and extensive with most of its territory and oceans still unexplored. Colombia has one of the largest open pit coal mines in the world in the region of Cerrejon in the Guajira Peninsula. It also has oil rigs and natural gas extraction in the eastern plains. Colombia is the main producer of emeralds and an important participant in gold, silver, iron, salt, platinum, petroleum, nickel, copper, hydropower and uranium extraction.[11]
Land use map of Colombia, 1970.Economic activity map of Colombia, 1970.
The main environmental issues affecting Colombia are deforestation; soil and water quality damage from overuse of pesticides; air pollution, especially in Bogota, from vehicle emissions and other main cities. The collateral damaged produced by attacks against oil pipeline infrastructure by rebel guerrillas in the Colombian armed conflict has produced long term damage to the environment. The armed groups also deforest large areas to cultivate illegal crops and open unauthorized highways in protected areas.
Snowfields and glaciers in Colombia are limited to the highest peaks and ranges in the Cordillera Central and Cordillera Oriental and above the 4,700-metre (15,400ft) elevation on the Sierra Nevada de Santa Marta. The total area of snowfields and glaciers was estimated to be about 104 square kilometers in the early 1970s.
Historical, geographical, and pictorial records point toward a consistent and progressive depletion of ice-and-snow masses in the Colombian Andes since the end of the "Little Ice Age" in the late 1800s. Many glaciers have disappeared during the 20th century, and others are expected to disappear in the coming decades.[12]
Facts
Land size: total: 1,138,910km2 (439,740sqmi)
Land boundaries: total: 6,672km
Coastline: 3,208km (Caribbean Sea 1,760km, North Pacific Ocean 1,448km)
Climate: tropical along coast and eastern plains; cooler in highlands
Terrain: flat coastal lowlands, central highlands, high Andes Mountains, eastern lowland plains
Elevation extremes: lowest point: Pacific Ocean 0 m highest point: Pico Cristobal Colon 5,975 m note: nearby Pico Simon Bolivar also has the same elevation
Ecuador is a country in western South America, bordering the Pacific Ocean at the Equator, for which the country is named. Ecuador encompasses a wide range of natural formations and climates, from the desert-like southern coast to the snowcapped peaks of the Andes mountain range to the plains of the Amazon Basin. Cotopaxi in Ecuador is one of the world's highest active volcanos. It also has a large series of rivers that follow the southern border and spill into the northwest area of Peru.
Panama is a country located in Caribbean, bordering both the Caribbean Sea and the Pacific Ocean, between Colombia and Costa Rica. Panama is located on the narrow and low Isthmus of Panama.
The geography of Bolivia includes the Eastern Andes Mountain Range which bisects Bolivia roughly from north to south. To the east of that mountain chain are lowland plains of the Amazon Basin, and to the west is the Altiplano which is a highland plateau where Lake Titicaca is located. Bolivia's geography has features similar to those of Peru which abuts Bolivia's northwest border; like Bolivia, Peru is bisected from north to south by the Eastern Andes Mountains, and these two countries share Lake Titicaca which is the highest navigable lake on Earth. Unlike Peru, however, Bolivia is one of the two landlocked countries in South America, the other being Paraguay, which is located along Bolivia's southeast border.
The Serranía del Perijá, Cordillera de Perijá or Sierra de Perijá is a mountain range, an extension of the eastern Andean branch, in northern South America, between Colombia and Venezuela, ending further north in the Guajira Desert, a total distance of about 310 kilometres (190 mi). It separates the Maracaibo Basin from the Cesar-Ranchería Basin. Some of the area has been considered as a Flora and Fauna Sanctuary.
The Cordillera Central is the highest of the three branches of the Colombian Andes. The range extends from south to north dividing from the Colombian Massif in Cauca Department to the Serranía de San Lucas in Bolivar Departments. The highest peak is Nevado del Huila at 5,364 m (17,598 ft).
The Cordillera Occidental is the lowest in elevation of the three branches of the Colombian Andes. The average altitude is 2,000 m (6,600 ft) and the highest peak is Cerro Tatamá at 4,100 m (13,500 ft). The range extends from south to north dividing from the Colombian Massif in Nariño Department, passes north through Cauca, Valle del Cauca, Risaralda, Chocó, and Caldas Departments to the Paramillo Massif in Antioquia and Córdoba Departments. The cordillera is paralleled on the east by the Cauca river. From this massif the range divides further to form the Serranías de Ayapel, San Jerónimo and Abibe. Only to recede into the Caribbean plain and the Sinú River valley.
The Cordillera Oriental is the widest of the three branches of the Colombian Andes. The range extends from south to north, dividing from the Colombian Massif in Huila Department to Norte de Santander Department where it splits into the Serranía del Perijá and the Cordillera de Mérida in Venezuelan Andes. The highest peak is Ritacuba Blanco at 5,410 m (17,750 ft) in the Sierra Nevada del Cocuy.
The Orinoquía region is one of the six natural regions of Colombia that belongs to the Orinoco River watershed. It's also known colloquially as the Eastern Plains from the Spanish Llanos Orientales. The region covers most of the area of the departments of Arauca, Casanare, Meta, and Vichada.
The Venezuelan Coastal Range, also known as Venezuelan Caribbean Mountain System, is a mountain range system and one of the eight natural regions of Venezuela, that runs along the central and eastern portions of Venezuela's northern coast. The range is a northeastern extension of the Andes, and is also known as the Maritime Andes. It covers around 48,866 km2, being the 4th largest natural region in Venezuela.
Because of its natural structure, Colombia can be divided into six distinct natural regions. These consist of the Andean Region, covering the three branches of the Andes mountains found in Colombia; the Caribbean Region, covering the area adjacent to the Caribbean Sea; the Pacific Region adjacent to the Pacific Ocean; the Orinoquía Region, part of the Llanos plains mainly in the Orinoco river basin along the border with Venezuela; the Amazon Region, part of the Amazon rainforest; and finally the Insular Region, comprising the islands in both the Atlantic and Pacific Oceans. Colombia is located in South America.
The Climate of Colombia is characterized for being tropical and isothermal as a result of its geographical location near the Equator presenting variations within five natural regions and depending on the altitude, temperature, humidity, winds and rainfall. Each region maintains an average temperature throughout the year only presenting variables determined by precipitation during a rainy season caused by the Intertropical Convergence Zone.
Geology of Colombia refers to the geological composition of the Republic of Colombia that determines its geography. Most of the emerged territory of Colombia covers vast areas within the South American Plate, whereas much submerged territory lies within the Caribbean Plate and the Nazca Plate.
Farallones de Cali is a cluster of mountains in the West Andes of Colombia. It is located west of the city of Cali and gives rise to many of the rivers that provide water and electricity to Cali. The PNN Farallones de Cali encompasses 150,000 ha (580 sq mi) in the mountains as well as much of the Pacific slope and is an area of very high biodiversity. The average temperature ranges from 25 °C (77 °F) in the tropical foothills to 5 °C (41 °F) in the páramo. In this territory are located the district of Pichinde, Andes and Leonera, and two villages Penas Blancas and Lomas de la Cajita.
The Paramillo Massif is a mountain range of the Tropical Andes System, located at the northern end of the Cordillera Occidental range in Colombia.
The Apure–Villavicencio dry forests (NT0201) is an ecoregion in Venezuela and Colombia to the east of the eastern cordillera of the Andes. The ecoregion covers the transition zone between montane forests in the Andes and the llanos, or lowland grasslands. It has been severely degraded by deforestation, farming and ranching. The remnants are poorly protected.
The Cordillera Oriental montane forests (NT0118) is an ecoregion in Venezuela and Colombia along the east slopes of the eastern cordillera of the Andes. The extensive region of submontane and montane forests includes distinctive flora and fauna in the north, center and southern sections. The ecoregion is home to numerous endemic species of fauna. Despite extensive changes due to logging, farming and ranching, large areas of the original habitat remain intact, and the ecoregion has rich biodiversity.
The Catatumbo moist forests (NT0108) is an ecoregion in Venezuela and Colombia to the west and east of Lake Maracaibo. It includes four regions of moist forest on slightly higher ground than the dry forest and mangroves that surround the lake. The forest has unique flora related to the flora of the Amazon basin. It is badly degraded due to farming, livestock grazing and oil exploration.
The Chocó–Darién moist forests (NT0115) is a largely forested, tropical ecoregion of northwestern South America and southern Central America. The ecoregion extends from the eastern Panamanian province of Darién and the indigenous region of Guna Yala to almost the entirety of Colombia's Pacific coast, including the departments of Cauca, Chocó, Nariño and Valle del Cauca.
The Magdalena Valley montane forests (NT0136) is an ecoregion in the Andes mountains of central Colombia.
The Cauca Valley montane forests (NT0109) is an ecoregion in western Colombia. It covers the sides of the Cauca Valley, which runs from south to north between the Central and Western Ranges (cordilleras) of the Colombian Andes. The ecoregion is home to very diverse fauna and flora, due in part to its varied elevations and climates, in part to its position near the isthmus of Panama, the route along which North American species invaded South America and then diversified as they moved to the upper parts of the Andes. Little of the original habitat remains at lower levels, but higher up there are sizeable blocks of forest, some of which are protected.
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