The sturdy, well-built structure was likely constructed on dry land at a time when sea levels were much lower than they are ...

Archaeologists have uncovered hundreds of mysterious stone formations hidden in one of the most extreme environments on Earth: Harrat Khaybar, a vast lava field in northwestern Saudi Arabia. Nicknamed ...

[music playing]NARRATOR: Aswan, Southern Egypt, March 1813.Swiss explorer Johann Burckhardt is traveling northalong the Nile River when he comesacross three massive stone heads protruding from the ...