Deep in the farthest reaches of Pettyjohn Cave, we stumbled upon something incredible - a massive cluster of crystals tucked away where few people go. This video documents the journey through ...

The Cave of Crystals in Chihuahua, Mexico, is buried almost 1,000 feet (300 meters) beneath Earth's surface and contains giant gypsum crystal beams that are up to 37 feet (11 m) long.

We stumbled upon a 170-foot deep hole in the woods that led us to a hidden chamber filled with giant crystals. In this video, we explore the depths of Pettyjohn Cave, uncovering massive crystal ...

Giant crystals that can reach sizes larger than houses grow at incredibly slow rates, taking as long as a million years to reach more than two stories tall, scientists now find.