Far below the surface of the Baltic Sea, archaeologists have mapped a 3,000 foot line of stones that looks less like a ...

The excavation of a Stone Age community center in Ukraine is helping explain why large groups of tens of thousands of people flourished and then fell more than 5,000 years ago. The "megastructure" ...

Radar scans revealed a sprawling underground complex extending nearly 3,500 feet beneath the Giza Plateau, with the chambers ...

Mysterious ancient megastructures sculpted in stone. A new study has stated that humans who constructed enormous "desert kites" in the past first drew scale plans of them, producing an 8,000-year-old ...

The mysterious megastructures of ancient eastern Europe were hubs of social and political decision making, but their role in centralising political control may have led to the downfall of these ...

Enormous, ancient "megastructures" may hold clues to the demise of a once prosperous, democratic civilization, researchers have said. In analyzing the purpose of these vast structures, which formed ...