archaeological discovery

Human achievements or alien intervention? 5 mysterious sites that defy explanation

While impressive archaeological remains can be found in many parts of the world, certain sites are imbued with an air of mystery. Here are 5 such mysterious ancient sites that intrigue the masses, scientists, and archaeologists.

Stonehenge researchers 'may have found largest neolithic site' (video)

Stone monoliths found buried near Stonehenge could have been part of the largest neolithic monument built in Britain, archaeologists believe.