A sinkhole may have swallowed a Pennsylvania woman. What are sinkholes and how do they form?
Authorities fear a woman in western Pennsylvania who disappeared while looking for her cat may have been swallowed by a sinkhole caused by mine subsidence ...
The Canadian Press on MSN56m
What to know about sinkholes after a Pennsylvania woman may have disappeared into one
Authorities fear a woman in western Pennsylvania who disappeared while looking for her cat may have been swallowed by a ...