The Blue Caves on Zakynthos Island boast of lively blue waters reflecting off white limestone. Only reachable through boat ...

The Marble Caves on General Carrera Lake, Chile, are nothing short of breathtaking with their swirling patterns carved by ...

An American Geological Railway Guide, giving the Geological Formation at every Railway Station; with Notes on interesting Places on the Routes, and a Description of each of the Formations. By ...

Standing over 20 feet in the air, the red, striped sandstone formations tower over the surrounding landscape, casting long shadows into the water they sit next to.

Their target? A 538-foot-long geological formation known as the Durupinar site — a boat-shaped mound said to eerily mirror the exact dimensions of the ark described in the Book of Genesis.