They were exploring a cave and couldn't believe what they found: prehistoric structures and the footprints of an ancient civilization Located in a unique place in Spain ...

The Theopetra Cave, located in the Thessaly region of Greece, is home to what many experts consider the oldest construction ever made by humans: a stone wall dating back roughly 23,000 years ...

For centuries, humans have lived underground. Today, that ancient practice is under dire threat—even as cave life makes more ...

The discovery of more than 100 prehistoric structures in the Cova Dones cave in Spain makes it one of the most significant prehistoric underground sites in the world. Archaeologists found ...

Archaeologists have made a groundbreaking discovery inside Egypt's Great Pyramid that they say rewrites longstanding beliefs about how the structure was built 4,500 years ago.

British archaeologists recently helped uncover multistory buildings from the ancient Egyptian city Imet in the Nile Delta, ...

A 17 miles, the massive new river structure will be far longer than the 1,000-foot-long river buoy structure that the State of Texas built as part of Operation Lone Star in Eagle Pass.