Timothy Bechtel has testified in state and federal courts, and his command of the subject has helped to find buried human ...

If you're looking to explore the hidden treasures below the surface, underwater cave adventures are as unique as they come ...

This story has been updated to reflect that portions of the interstate have been closed for about six weeks. The third sinkhole since December has opened up on Interstate 80 in north New ...

Caves in Reigate are a tourist attraction, but less is known about the ones lurking underfoot in Godstone When a giant sinkhole swallowed up part of a road in Surrey it caused homes to be ...

Vietnam’s ‘Nightmare’ sinkhole, 250 meters deep, remains largely unexplored, with fewer than 10 people ever reaching the ...

A cave explorer stands atop a large spiral stalagmite in the Watch Out for Dinosaurs area, a sinkhole inside Son Doong. Part of the cave ceiling collapsed, letting sunlight into the cave and ...

Could caves have caused the sinkhole? "It's possible," he said. "We're not experts in what causes such things. That's down to the geologists and ground engineers. "We're seen as a source of ...