We pushed farther than we ever had before - and it paid off. Deep in the outer limits of Petty Johns Cave, we stumbled upon a massive crystal formation hidden beyond the usual paths. In this video, we ...

Scientists have discovered a giant 'magma cap' under Yellowstone National Park. The cap is likely playing a critical role in ...

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.