In early January, a giant sinkhole formed at an intersection in the West Oak Lane neighborhood of North Philadelphia after a ...

There are two categories of change that create sinkholes. One type is associated with carbonate rock. This is a type of rock ...

“A sinkhole is a hole that opens up in the ground due to some change in the subsurface.” This simple definition, provided by hydrogeologist Laura Toran, sums up what is so chilling about sinkholes in ...

Most sinkholes form in “karst terrain,” areas where bedrock consists of water-soluble rocks like limestone, gypsum, or salt.

Another day, another sinkhole in Florida. — -- Another day, another sinkhole. The latest one to take place is in Florida. A family had minutes to escape before what appeared to be a sinkhole ...