The stalactites and stalagmites of Sequoia National Park’s Crystal Cave, a sprawling subterranean wonder that’s been closed ...

Trump emergency management officials are discussing reforms that would make it much harder for communities to qualify for ...

While there are over 100 trails throughout the Sandia Mountain Wilderness in New Mexico, there's one cave hike you can't miss.

Archaeologists uncovered ancient offerings in a sealed cave in Mexico, revealing secrets of the lost Tlacotepehua ...

Archaeologists in Mexico have discovered ancient Mayan pottery in a cave system a little more than 10 miles away from downtown Playa de Carmen.

We were hiking across a mountain ridge when we came across what looked like just another hole in the ground - but it turned ...

There are 30 national parks near Phoenix that are all less than six hours away, making it an excellent home base for ...