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Download QR code; Print/export ... This list of deepest caves includes the deepest known natural caves according to maximum surveyed depth as ... 3 Sarma cave: 1830 ...
This list of deepest mines includes operational and non-operational mines that are at least 2,224 m (7,297 ft), which is the depth of Krubera Cave, the deepest known natural cave in the world. The depth measurements in this list represent the difference in elevation from the entrance of the mine to the deepest excavated point.
A solutional cave, solution cave, or karst cave is a cave usually formed in a soluble rock like limestone (Calcium carbonate CaCO 3). It is the most frequently occurring type of cave. It can also form in other rocks, including chalk, dolomite, marble, salt beds, and gypsum. [1]
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.
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The obscure bumblebee is very similar to the yellow-faced bumblebee (B. vosnesenskii), and the two can only be definitively told apart by the structure of the male genitalia. [3] The obscure bumblebee tends to have longer hairs, however, and yellow hairs are found on the underside of the abdomen, where B. vosnesenskii has only black hairs on ...
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