A geyser is a spring characterized by an intermittent discharge of water ejected turbulently and accompanied by steam. As a fairly rare phenomenon, the formation of geysers is due to particular hydrogeological conditions that exist only in a few places on Earth.
Soda Springs is a city in Caribou County, Idaho, United States. Its population was 3,133 at the time of the 2020 census. The city has been the county seat of Caribou County since the county was organized in 1919. In the 1860s, Soda Springs served as the seat of Oneida County.
The Eifel is a low mountain range in western Germany, eastern Belgium and northern Luxembourg. It occupies parts of southwestern North Rhine-Westphalia, northwestern Rhineland-Palatinate and the southern area of the German-speaking Community of Belgium.
The geothermal areas of Yellowstone include several geyser basins in Yellowstone National Park as well as other geothermal features such as hot springs, mud pots, and fumaroles. The number of thermal features in Yellowstone is estimated at 10,000. A study that was completed in 2011 found that a total of 1,283 geysers have erupted in Yellowstone, 465 of which are active during an average year. These are distributed among nine geyser basins, with a few geysers found in smaller thermal areas throughout the Park. The number of geysers in each geyser basin are as follows: Upper Geyser Basin (410), Midway Geyser Basin (59), Lower Geyser Basin (283), Norris Geyser Basin (193), West Thumb Geyser Basin (84), Gibbon Geyser Basin (24), Lone Star Geyser Basin (21), Shoshone Geyser Basin (107), Heart Lake Geyser Basin (69), other areas (33). Although famous large geysers like Old Faithful are part of the total, most of Yellowstone's geysers are small, erupting to only a foot or two. The hydrothermal system that supplies the geysers with hot water sits within an ancient active caldera. Many of the thermal features in Yellowstone build up sinter, geyserite, or travertine deposits around and within them.
The Poás Volcano, is an active 2,697-metre (8,848 ft) stratovolcano in central Costa Rica and is located within Poas Volcano National Park. It has erupted 40 times since 1828, including April 2017 when visitors and residents were evacuated. The volcano and surrounding park were closed for nearly 17 months, with a 2.5 kilometer safety perimeter established around the erupting crater. On September 1, 2018, the park reopened with limited access only to the crater observation area and required a reservation to be made on the National Park Website. Adjacent trails to Lake Botos as well as the museum at the visitor center remained closed. The volcano erupted briefly twice in September 2019.
A mud volcano or mud dome is a landform created by the eruption of mud or slurries, water and gases. Several geological processes may cause the formation of mud volcanoes. Mud volcanoes are not true igneous volcanoes as they do not produce lava and are not necessarily driven by magmatic activity. Mud volcanoes may range in size from merely 1 or 2 meters high and 1 or 2 meters wide, to 700 meters high and 10 kilometers wide. Smaller mud exudations are sometimes referred to as mud-pots.
Andernach is a town in the district of Mayen-Koblenz, in Rhineland-Palatinate, Germany, of about 30,000 inhabitants. It is situated towards the end of the Neuwied basin on the left bank of the Rhine between the former tiny fishing village of Fornich in the north and the mouth of the small river Nette in the southeast, just 13 miles (21 km) north of Koblenz, with its five external town districts: Kell, Miesenheim, Eich, Namedy, and Bad Tönisstein.
Vembanad is the longest lake in India, as well as the largest in the state of Kerala. The lake has an area of 230 square kilometers and a maximum length of 96.5 km. Spanning several districts in the state of Kerala, it is known as Vembanadu Lake in Kottayam, Vaikom, Changanassery, Punnamada Lake in Alappuzha, Punnappra, Kuttanadu and Kochi Lake in Kochi. Several groups of small islands including Vypin, Mulavukad, Maradu, Udayamperoor, Vallarpadam, and Willingdon Island are located in the Kochi Lake portion. Kochi Port is built around the Willingdon Island and the Vallarpadam island.
Crystal Geyser is a cold water, carbon dioxide driven geyser located on the east bank of the Green River approximately 9 miles (14 km) downstream from Green River, Utah, United States.
Between Bingen and Bonn, Germany, the river Rhine flows as the Middle Rhine through the Rhine Gorge, a formation created by erosion, which happened at about the same rate as an uplift in the region, leaving the river at about its original level, and the surrounding lands raised. This gorge is quite deep, about 130 metres (430 ft) from the top of the rocks down to the average water-line.
Laacher See, also known as Lake Laach or Laach Lake, is a volcanic caldera lake with a diameter of 2 km (1.2 mi) in Rhineland-Palatinate, Germany, about 24 km (15 mi) northwest of Koblenz, 37 km (23 mi) south of Bonn, and 8 km (5.0 mi) west of Andernach. It is in the Eifel mountain range, and is part of the East Eifel volcanic field within the larger Volcanic Eifel. The lake was formed by a Plinian eruption approximately 13,000 years BP with a Volcanic Explosivity Index (VEI) of 6, on the same scale as the Pinatubo eruption of 1991. The volcanic discharge observable as mofettas on the southeastern shore of the lake are signs of dormant volcanism.
Poás Volcano National Park is a national park in Costa Rica that covers an area of approximately 65 square kilometres ; the summit of Poás Volcano located within the park is at an elevation of 2,700 metres (8,900 ft). The park was established on 25 January 1971. Depending on conditions, visitors can walk all the way to the edge of the main crater, but on 13 April 2017 the park was closed to visitors due to an explosive eruption on the evening of 12 April. Still further eruptions, including on Easter, 16 April, caused the park to be closed until August 2018.
The Berca Mud Volcanoes is a geological and botanical reservation located in Scorțoasa commune close to Berca in Buzău County in Romania. Its most spectacular feature is the mud volcanoes, small volcano-shaped structures typically a few metres high caused by the eruption of mud and natural gases.
Waiotapu is an active geothermal area at the southern end of the Okataina Volcanic Centre, just north of the Reporoa caldera, in New Zealand's Taupo Volcanic Zone. It is 27 kilometres south of Rotorua. Due to dramatic geothermal conditions beneath the earth, the area has many hot springs noted for their colourful appearance, in addition to the Lady Knox Geyser, Champagne Pool, Artist's Palette, Primrose Terrace and boiling mud pools. These can mostly be viewed through access by foot, and in addition to a paid and curated experience, naturally forming hot springs appear around the area. The geothermal area covers 18 square kilometres. Prior to European occupation the area was the homeland of the Ngati Whaoa tribe who descended from those on the Arawa waka (canoe).
The Waimangu Volcanic Rift Valley is the hydrothermal system created on 10 June 1886 by the volcanic eruption of Mount Tarawera, on the North Island of New Zealand. It encompasses Lake Rotomahana, the site of the Pink and White Terraces, as well as the location of the Waimangu Geyser, which was active from 1900 to 1904. The area has been increasingly accessible as a tourist attraction and contains Frying Pan Lake, which is the largest hot spring in the world, and the steaming and usually pale blue Inferno Crater Lake, the largest geyser-like feature in the world although the geyser itself cannot be seen since it plays at the bottom of the lake.
Woodside is a ghost town located on the west bank of the shallow Price River in the nearly uninhabited eastern part of Emery County, Utah, United States. Its fenced-in filling station is one of the only signs of human activity along the lonely stretch of U.S. Route 6/191 between Wellington and Green River.
The Volcano Park in Mayen-Koblenz is a geopark in the rural district of Mayen-Koblenz in the eastern Vulkan Eifel, Germany. It was founded in 1996 and wraps around the Laacher See. Together with the Volcano Park, Brohltal/Laacher See and the Vulkan Eifel Nature and Geo-Park, it forms part of the national Eifel Volcano Land Geo-Park. The three parks are connected by the 280-kilometre-long German Volcano Route.
The Wallender Born or Wallenborn is a cold water geyser in the village Wallenborn. It is adjacent to the reactivated Andernach Geyser an active cold water geyser in Germany.
Cold-water geysers are geysers that have eruptions whose water spurts are propelled by CO2-bubbles, instead of the hot steam which drives the more familiar hot-water geysers: The gush of a cold-water geyser is identical to the spurt from a freshly-opened bottle of soda pop. Cold-water geysers look quite similar to their steam-driven counterparts; however, their CO2-laden water often appears whiter and more frothy.
