The Underground Eiger information

The Underground Eiger is a made-for-television documentary that was released in 1979. It details a world record-breaking cave dive of 6,000 ft (1,800 m)...

as an underground river) is a river or watercourse that runs wholly or partly beneath the ground, one where the riverbed does not represent the surface...

An underground lake (also known as a subterranean lake) is a lake underneath the surface of the Earth. Most naturally occurring underground lakes are found...

330 ft) below the modern water table. However, very few of these cenotes appear to be connected with horizontally extensive underground river systems...

the disasters that can devastate or destroy underground biological communities. Speleologists also work with archaeologists in studying underground ruins...

stability) to dig a square pit on the spot, and then dig the cave horizontally on the four walls to form the underground courtyard. In most parts of western...

speakeasy in the 1920s. The Caves of St. Louis may have been a hiding-place along the Underground Railroad. In the 1970s, several members of the Tasaday apparently...

Dreyfuss) at night on board the Orca. Oliver Statham sings it as he completes a record-breaking cave dive in The Underground Eiger (1979), a British documentary...

where surface water enters into underground passages; they may be found in karst landscapes where the geology and the geomorphology is typically dominated...

systems with sinkholes and caves underground. More weathering-resistant rocks, such as quartzite, can also occur, given the right conditions. Subterranean...

subterranean waterfall, tierous waterfall, or underground waterfall is a waterfall located underground, usually in a cave or mine. They are a common feature...

dealing in horses and attending the Appleby Horse Fair. He additionally directed The Underground Eiger, which detailed the record-setting cave dive of Oliver...

type of rock formation that rises from the floor of a cave due to the accumulation of material deposited on the floor from ceiling drippings. Stalagmites...

often fed by underground drainage from a large catchment basin. Because the springs are usually the terminus of a cave drainage system at the place where...

The following is a list of the longest caves in the United States per length (> 50 km) of documented passageways. Many passageways are still being discovered;...

The Eiger Express is a gondola cableway linking Grindelwald with the Eigergletscher that opened in December, 2020. The Eiger Express was constructed as...

This list of longest caves includes caves in which the combined length of documented passageways exceeds 100 kilometres (62 mi). In some of these caves...

(in the US) and pothole or pot (in the UK); jama in Slavic languages scientific and colloquial vocabulary (borrowed since early research in the Western...

available. The type of clothes worn underground varies according to the environment of the cave being explored, and the local culture. In cold caves, the caver...

cave formed primarily by the wave action of the sea. The primary process involved is erosion. Sea caves are found throughout the world, actively forming...

award for the station. Another 1979 documentary The Underground Eiger detailed the record-breaking cave dive of Oliver Statham and Geoff Yeadon. The 1989 documentary...

includes the deepest known natural caves according to maximum surveyed depth as of 2023[update]. The depth value is measured from the highest to the lowest...

This list of caves in Missouri includes the location and date they were opened to the public (or discovered). The Ozarks region has a well-developed karst...

brown due to the presence of mud and silt. Many factors impact the shape and color of speleothems, including the chemical composition of the rock and water...

small trains, and boats if they contain underground water features. Some caves (mainly in Asia) open to the public have temples, monasteries and religious...

water flows down the walls or along the floors of a cave. They are typically found in "solution caves", in limestone, where they are the most common speleothem...

formations number in the hundreds in Istria. In karst areas, a sinkhole, sink, or doline is a closed depression draining underground. It can be cylindrical...

the ground, specifically a space large enough for a human to enter. Caves often form by the weathering of rock and often extend deep underground. The...

Stalactites at the Puerto Princesa Underground River, Palawan, Philippines Mineralized water drop forming at bottom of stalactites Stalactites of the type called...

Speleogenesis is the origin and development of caves, the primary process that determines essential features of the hydrogeology of karst and guides its...