“There’s rock and soil and ... in it.” Sinkholes occur in the area because of subsidence from coal mining activity. Rescuers had been using water to break down and remove clay and dirt ...

Successive bouts of heavy downpours pummeled Northern California over several days in December 1995, and not even SF's tony Sea Cliff was spared destruction.

Rescuers had to change their tactics — using water to remove clay and dirt from the mine — as debris crumbled into the sinkhole. “It’s got areas of where it’s started to collapse and ...

Authorities fear a woman in western Pennsylvania who disappeared while looking for her cat may have been swallowed by a sinkhole — a ... region is at risk for soil subsidence, where underground ...