Kartchner Caverns State Park is known for its diversity of minerals. On March 1, park staff spotted one that's particularly ...

The Marble Caves are natural rock formations with curved walls covered in swirling mineral patterns. They sit on the shores of General Carrera Lake, a glacial lake in southern Chile. The lake ...

As often as she can, Northup and other members of SLIME (Subsurface Life in Mineral Environments), a loose affiliation of cave scientists working on geomicrobiological interactions in caves ...

Over time, dripping water caused mineral deposits, which eventually turned into crystals. It's believed that pirates like Blackbeard used these caves as hideouts hundreds of years ago. In addition ...

Donald Trump has fired several of the US military’s most senior officers in what’s being described, in some quarters, as a “purge”.

The resonating stalactites are spread around a 3.5 acre (14,000 square meters) cave, but because it is ... a constant drip-drip-drip of water filled with minerals that love to get left behind ...