The abandoned mines that have caused sinkholes on I-80 in New Jersey will be monitored by both state and federal officials to ensure the safety of the highway, officials said. Gov. Phil Murphy’s ...

But what exactly is a sinkhole, and what are the warning signs? Here’s everything you need to know. A sinkhole is a depression in the ground with no natural external surface drainage.

But what exactly is a sinkhole, and what are the warning signs? Here’s everything you need to know. A sinkhole is a depression in the ground with no natural external surface drainage. This means that ...