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Mahesh

25/05/22 09:42 AM IST

karst sinkhole

In News
  • A cave exploration team has discovered an ancient forest at the bottom of a giant karst sinkhole in Leye County in south China’s Guangxi Zhuang Autonomous Region.
About Sinkhole 
  • It is located in south China’s Guangxi Zhuang Autonomous Region.
  • The sinkhole measures 306 metres in length, is 150 metres in width and 192 metres in depth, with its volume exceeding 5 million cubic meters.
  • Southern China is home to karst topography – a landscape prone to dramatic sinkholes and otherworldly caves.
  •  The sinkhole can be categorised as a large sinkhole. In Mandarin, giant sinkholes are called Tiankeng or “heavenly pit.
Sinkholes formation
  • Sinkholes are depressions formed in the ground when layers of the Earth’s surface start collapsing into caverns.
  • They can occur suddenly and without warning, because the land under the surface of the Earth can stay intact for a period of time until the spaces get too big.
  • Sinkholes can be formed due to natural processes or human activity.
  • Typically, sinkholes form in areas of “karst” terrains, where the rock below the surface of the Earth can be easily dissolved by groundwater.
Source- Indian Express 

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