What Are Sinkholes?
By Stephanie Pappas, Senior Writer | June 26, 2017 09:45am ET
They've swallowed Corvettes in Kentucky, condos in Florida and homes in Texas. Clearly, sinkholes are not to be sneezed at. But what causes these collapses of supposedly solid ground?
Sinkholes are pits in the ground that form in areas where water gathers without external drainage, according to the U.S. Geological Survey. As water drains below ground, it can dissolve subterranean caverns, particularly in areas where the bedrock is made of water-soluble evaporate rocks such as salt or gypsum or of carbonate rocks such as limestone or dolomite.
https://www.livescience.com/44123-what-are-sinkholes.html
