Most of us think about erosion on the surface of the earth, but erosion can occur in the subsurface as well. In fact, ...

Increased use of groundwater caused the ground to sink (subsidence) around Konya, Turkey, leading to this sinkhole in 2019. Sudden, large collapse of sinkholes are relatively rare. Sinkholes can ...

So, why do they happen? Sinkholes occur when underground water washes away soft rocks like limestone and salt beds. As these wear away over time, a cavern forms. When the cavern gets too big ...

Sinkholes occur when bedrock made of limestone or other carbonate rock is eaten away by acidic groundwater or a surge of pressure caused by heavy rains or burst pipes. Sinkholes happen ...

Sinkholes can occur gradually when the surface subsides into bowl shaped depressions or suddenly when the ground gives way. These geological hazards have swallowed highways, apartment buildings ...

but where do sinkholes occur most in the Keystone State? According to the Pennsylvania Department of Conservation and Natural Resources (DCNR), a sinkhole is a depression in the ground caused by ...