The natural world has brewed up a spooky 'skull' in a deep volcanic pit in the Sahara Desert. From space, the sight really does look like a ghostly apparition – a white face glowering from our ...

Explorers dropped a GoPro into the deepest natural pit in the United States, capturing rare footage from a vertical cave system stretching hundreds of feet underground. The video reveals hidden ...

The Pacific Ocean is home to some of the deepest points on the planet. In fact, four of the top six deepest spots in the world can be found in the Pacific. The Pacific's basin is uniquely low, which ...