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The depth value is measured from the highest to the lowest accessible cave point. # Name Depth (m) Length (km) Country coordinates 1 Krubera-Voronja Cave: 2224 [1] [2 ...
A popular cave diving destination, Pluragrotta attracts more divers than any other cave in Scandinavia. Visibility in the cave waters is high. The cave's passages were formed by the flow of the Plura river over limestone, and the cave system includes marble formations. A number of species have been identified in the cave ecosystem.
Hranice Abyss. Hranice Abyss (Czech: Hranická propast) is the deepest flooded pit cave in the world. It is a karst sinkhole near the town of Hranice, Czech Republic.The greatest confirmed depth is 519.5 m (1,704 ft), of which 450 m (1,476 ft) is underwater.
Boesmansgat (or Bushmansgat), also known in English as "Bushman's Hole", is a deep submerged freshwater cave (or sinkhole) in the Northern Cape province of South Africa, which has been dived to a depth of 282.6 metres (927 ft). Boesmansgat was believed to have first been explored by amateur diver Mike Rathbourne, in 1977.
In 1990, a breakthrough was made, connecting the cave to the nearby "Scialet de la Fromagère". This gives the current recorded depth as −1,271 metres (−4,170 ft) [2] In June 2011 the terminal sumps were dived [3] and in 2014 another attempt was made to pass the sumps. In recent years there have been six fatalities in this cave, five due to ...
With a depth of 274 m (900 ft) and a length of at least 50 kilometres (31 mi), it is the deepest cave in the UK and the second-longest in Wales. The passages and chambers of Ogof Ffynnon Ddu weave a tortuous path beneath the east side of the Tawe Valley.
The cave was pushed to −340 m during 1982–1987. Two "windows" in a vertical shaft at depths of 220–250 m were documented on the cave map but remained unexplored. During this time the cave received its second, alternative name Voronja (Crows') Cave, owing to the number of crows nesting in the entrance shaft.
The Hölloch (English: Hellhole) [2] is a 200.4 km (124.5 mi) long cave in the municipality Muotathal in Switzerland. In addition to being the second longest cave in Europe and the 11th longest of the world, it is also notable for having a depth of 1,033 m (3,389 ft). [1] The Hölloch is an example of a karst cave system. [3]