Sinkholes - Amazing facts || Natural Sinkholes || Largest Sinkholes || Blue holes || Facts|| FacTim

Hi Everyone, FacTime welcomes you. Sink holes are dominant in areas where the rock below the land surface is carbonate rock, limestone rock, sedimentary rock etc which is easily dissolved by underground water. The percolating underground water forms wide spaces and caverns in the rocks below the land surface finally dissolving it completely causing the land to collapse. These collapse of the land may be very small or very big eating away an entire house or huge chunks of roads. Size of the sinkholes varies from a few feet to hundreds of acres with a depth spanning from one feet to hundreds of feet. 1) The Minye sinkhole in Papua New Guinea and the Cedar Sink at Mammoth Cave National Park in Kentucky exhibit a visible opening into a cave below. Also an underground river or stream is visible at its bottom flowing from one side to the other. 2) Artificially sinkholes get created due to human activities like mining, salt cavern storage, leaking of old sewerage pipes, drain pipes and water pipes. Sinkholes also get created due to over pumping and extraction of groundwater and subsurface fluids. 3) The 662 meter (2,172 feet) deep Xiaozhai Tiankeng (Chongqing, China), giant Sotanos in Queretaro and San Luis Potosi states in Mexico are the largest known sinkholes of the World. 4) Blue holes are the name given to deep water filled pits formed in carbonate rocks. The name was initially given to deep under water sinkholes in Bahamas. Noticeably high depths of the sinkholes impart...