A British researcher scanning through images from Google Earth has discovered a new section of the Great Wall of China.

Surprisingly, this part of the famous wall isn't in China, but rather Mongolia. The Great Wall is actually comprised of several walls built in various centuries by several different rulers starting in the fifth century B.C., or perhaps earlier.

When Great Wall expert William Lindesay spotted what looked like a wall cutting across a remote part of the Gobi Desert in Mongolia's southernmost region, he headed out with a team to follow along 60 miles of it. This photo, courtesy Alec East, shows the kind of terrain these modern-day adventurers had to deal with.

The wall varies in construction depending on the terrain and resources. In some parts it's made of local volcanic basalt, while in others it's a simple berm of sand and shrub cuttings. Lindesey believes this new portion of the wall is part of the so-called Wall of Genghis Khan, which, despite the name, is not considered a project by the famous conqueror but actually the Han Dynasty of China in 115 B.C.

Lindesay says this is the first time part of China's defenses has been found outside of the modern boundaries of China. A journalist for the New York Times may have discovered a portion of the same wall in Russia in 2001.

Filed under: History, Learning, Asia, China, Mongolia