Caves are some of the most interesting and perplexing features on our planet. Here's how they form! Oh yeah and I did the math wrong in comparing the size of the cave to the grand canyon, turns out ...

Put simply, caves form when flowing water slowly dissolves rock over a long time. Specifically, they form within certain geological formations called “karst” – which includes structures made ...

The cave is currently thought to be around the same height as six-and-a-half Eiffel Towers stacked on top of one another. A map marks when explorers discovered different routes and where they ...

Tepuis, rocky tabletop mountains isolated by hundreds of metres of steep cliffs, form a unique habitat on their tops and inside their maze of caves. Untouched for millions of years, they host a ...

Drones and cameras were used to create the first 3-D aerial map of the region and scout for cave access points. One team traveled some 900 ft down a shaft on Thursday until they reached a dead end.

How do caves form? Put simply, caves form when flowing water slowly dissolves rock over a long time. Specifically, they form within certain geological formations called "karst"—which includes ...