The Antofagasta Region is one of Chile's sixteen first-order administrative divisions. Being the second-largest region of Chile in area, it comprises three provinces, Antofagasta, El Loa and Tocopilla. It is bordered to the north by Tarapacá, by Atacama to the south, and to the east by Bolivia and Argentina. The region's capital is the port city of Antofagasta; another one of its important cities is Calama. The region's main economic activity is copper mining in its giant inland porphyry copper systems.
Jujuy is a province of Argentina, located in the extreme northwest of the country, at the borders with Chile and Bolivia. The only neighboring Argentine province is Salta to the east and south.
Antofagasta is a port city in northern Chile, about 1,100 kilometres (700 mi) north of Santiago. It is the capital of Antofagasta Province and Antofagasta Region. According to the 2015 census, the city has a population of 402,669.
Calama is a city and commune in the Atacama Desert in northern Chile. It is the capital of El Loa Province, part of the Antofagasta Region. Calama is one of the driest cities in the world with average annual precipitation of just 5 mm (0.20 in). The River Loa, Chile's longest, flows through the city. Calama has a population of 147,886.
San Pedro de Atacama is a Chilean town and commune in El Loa Province, Antofagasta Region. It is located east of Antofagasta, some 106 km (60 mi) southeast of Calama and the Chuquicamata copper mine, overlooking the Licancabur volcano. It features a significant archeological museum, the R. P. Gustavo Le Paige Archaeological Museum, with a large collection of relics and artifacts from the region. Native ruins nearby attract increasing numbers of tourists interested in learning about pre-Columbian cultures.
Cerro is Spanish for "hill" or "mountain".
Salar de Atacama, located 55 km (34 mi) south of San Pedro de Atacama, is the largest salt flat in Chile. It is surrounded by mountains and lacks drainage outlets. To the east, it is enclosed by the main chain of the Andes, while to the west lies a secondary mountain range called Cordillera de Domeyko. The landscape is dominated by imposing volcanoes such as Licancabur, Acamarachi, Aguas Calientes, and Láscar, the latter being one of Chile's most active volcanoes. These volcanoes are situated along the eastern side of the Salar de Atacama, forming a north–south trending line that separates it from smaller endorheic basins.
Los Flamencos National Reserve is a nature reserve located in the commune of San Pedro de Atacama, Antofagasta Region of northern Chile. The reserve covers a total area of 740 square kilometres (290 sq mi) in the Central Andean dry puna ecoregion and consists of seven separate sections.
The Atacama Desert is a desert plateau located on the Pacific coast of South America, in the north of Chile. Stretching over a 1,600-kilometre-long (1,000-mile) strip of land west of the Andes Mountains, it covers an area of 105,000 km2 (41,000 sq mi), which increases to 128,000 km2 (49,000 sq mi) if the barren lower slopes of the Andes are included.
The Puna de Atacama or Atacama Plateau is an arid high plateau, in the Andes of northern Chile (15%) and northwest of Argentina (85%). Geomorphologist Walther Penck based his Grossfalt landform association on Puna de Atacama.
Salín is a mountain at the border of Argentina and Chile with an elevation of 6,029 metres (19,780 ft) metres. Salin is within the following mountain ranges: Argentine Andes, Chilean Andes, Puna de Atacama. Its territory is within the Argentinean protection area of Provincial Fauna Reserve Los Andes. It is on the border of 3 provinces: Argentinean province of Salta; Chilean provinces of El Loa and Antofagasta. Its slopes are within 3 cities: Argentinean city of Tolar Grande, Chilean cities of San Pedro de Atacama and Antofagasta (Chile).
Mina La Casualidad is an abandoned mine and ghost town in Salta Province in northwestern Argentina.
Los Andes is a department located in Salta Province, Argentina. It is the second largest by area in the province, after Rivadavia Department, and its capital is the town of San Antonio de los Cobres.
La Poma is a department located in Salta Province, Argentina. It is the least populated department of the province and its capital is the town of La Poma.
The Salta–Antofagasta railway, also named Huaytiquina, is a non-electrified single track railway line that links Argentina and Chile passing through the Andes. It is a 1,000 mmmetre gauge railway with a total length of 941 km, connecting the city of Salta (Argentina) to the one of Antofagasta (Chile), on the Pacific Ocean, passing through the Puna de Atacama and Atacama Desert.
Salar de Arizaro is a large salt flat of the Andes in north-western Argentina. It is located between the villages of Tolar Grande and Caipe and near Mina La Casualidad, in Los Andes Department, Salta Province.
Llullaillaco is a dormant stratovolcano on the border between Argentina and Chile. It lies in the Puna de Atacama, a region of tall volcanic peaks on a high plateau close to the Atacama Desert, one of the driest places in the world. Its maximum elevation is most commonly given as 6723 m, making it the second- or third-highest volcano in the world. Despite its height, it is not clear whether the volcano has any glaciers or merely patches of perennial snow and ice. Between 3700 m and 5000 m elevation there is a sparse plant cover, while at lower altitudes the climate is too dry for plants to grow. A species of mouse on Llullaillaco is the highest-living known vertebrate species.
Ojos de Mar is a group of 3–6 small water bodies close to the town of Tolar Grande in Argentina and an important tourist attraction there. They are inhabited by extremophile microorganisms of interest to biotechnology; stromatolites have also been found there.
Salar del Hombre Muerto is a salt pan in Argentina, in the Antofagasta de la Sierra Department on the border between the Salta and Catamarca Provinces. It covers an area of 600 square kilometres (230 sq mi) and is in part covered by debris. During the Pleistocene it was sometimes a lake, but today only parts of the salt pan are covered by perennial water bodies; its major tributary is the Río de los Patos.
The Geste Formation is a fossiliferous geologic formation of the Puna Plateau in the western Salta Province and northern Catamarca Province of the Argentine Northwest, northwestern Argentina.
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