The eleven "Big Circles" in Jordan are each about 1,300 feet in diameter.
Researcher David Kennedy, who has led the Aerial Archaeology in Jordan Project since 1997, told Live Science that the circles' similarity is "too close to be a coincidence." The archaeologists are studying high-resolution aerial images of the stone circles, which provide details about structures that have been "shrouded in mystery for decades," Live Science notes.
Jordan's 'Big Circles' leave archaeologists baffled http://t.co/bS9tV6WTXf pic.twitter.com/UzAoY47G6u
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