Swim through Calaveras County's stunning Natural Bridges cave and uncover the ancient forces that shaped it, and the volunteers fighting to preserve it.

T housands upon thousands of prehistoric animals are pristinely preserved at the site of an ancient sinkhole-pond in the US. The mind-blowing site is a snapshot of a beautiful ecosystem that thrived ...

Exploring historical maps can send you down a fascinating rabbit hole — especially when you’re trying to trace streets that existed before the interstate reshaped the city. I’ve tried to pinpoint my ...

Laurel Caverns near Farmington isn’t just another hole in the ground—it’s Pennsylvania’s largest cave system, a subterranean playground where Mother Nature decided to show off her artistic side.