The Cave of Crystals is an underground cavern filled with tree-size gypsum crystals, including some of the largest natural crystals ever found. The cave is located around 980 feet (300 meters) deep ...

These huge gypsum crystals in Mexico's Naica caves, some up to 12m long, have been growing for tens of thousands of years -- but scientists have only now discovered what's inside them. "We've ...

This is quite possibly the most heart-stopping and best clips we’ve ever received for Expedition Unknown this season! Pic credit: Discovery Deep in the jungles of Honduras, there is a special place ...