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The cave contains the world's largest non-subglacial underground lake, [1] with an area of almost 2 hectares (4.9 acres). [2] The lake is located around 100 metres (330 ft) below the surface. [3] Its total depth is 205 metres (673 ft).
Underground lake within Cross Cave in Slovenia, one of 22 such lakes. 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 in areas of karst topography, [1] [2] where limestone or other soluble rock has been weathered away, leaving a cave where water can flow and accumu
Entrance to cavern. Craighead Caverns is an extensive cave system located in between Sweetwater and Madisonville, Tennessee.It is best known for containing the United States' largest and the world's second largest non-subglacial underground lake, The Lost Sea.
Dragon's Breath Cave was subsequently surveyed and listed in the Guinness World Records book as the largest non-subglacial underground lake in the world. [3] Caves beneath Otjikoto Lake and Lake Guinas: Both of these lakes were created by collapsing dolomite caves, and are submerged in water. [4]
Mammoth Cave, the world's longest known cave system. 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, passageways are still being discovered. [1] [2]
With a length of 300 and a width of 20 m it is the largest underground lake in Europe. It was discovered in 1943 by Jean-Jacques Pittard. Prior to 1946 the water-level was much higher, but an earthquake with a force of 5.6 on the Richter-scale opened additional fissures in the cave on January 25, 1946 made it more readily navigable.
The list below largely ignores many natural lakes that have been augmented with the addition of a relatively minor dam. For example, a small dam, two hydroelectric plants, and locks on the outlet of Lake Superior make it possible to artificially control the lake level. Certainly, the great majority of the lake is natural.
Below are the reservoirs (artificial lakes) in the world with a surface area exceeding 500 km 2 (190 sq mi). Reservoirs can be formed conventionally, by damming the outlet of a canyon or valley to form a lake; the largest of this type is Ghana's Lake Volta, with a water surface of 8,500 km 2 (3,300 sq mi).