david kennedy

The giant stone circles in the Middle East, dating back at least 2,000 years, challenge scientists' answers for decades.

A group of researchers using aerial reconnaissance discovered pictures of

By aerial photography, archaeologists in Jordan obtained a picture of a 150 km long wall that brought great mysteries about time, purpose and builders.

Nearly 400 stone works dating back thousands of years were discovered in Saudi Arabia. Some of these wall-like structures are lined along long-standing lava arches.