High atop the Anatolian Plain near the border with Syria a rare archaeological site may be revealing new clues to the origins of human farming. Klaus Schmidt, a German archaeologist who has been excavating the site since 1994, uncovered circles of huge decorated T-shaped stones that are at least 5,000 years older than any other monumental structure ever found. Whatever the carbon-dating eventually shows, Gobekli Tepe stands at the cusp of what is arguably the biggest social revolution in human history - the transformation of semi-nomadic hunters into settled farmers.
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Dean C.K. Cox is the photo editor for EurasiaNet.