The Big Circles
In Jordan, there are a dozen huge circles made of stones that range in diameter from 720 feet to 1490 feet. And more recently, one more big circle was found in neighboring Syria. The construction of this circle is so similar to the ones in Jordan that experts believe they were made by the same builders. Just exactly why these stone circles were made is still a mystery.
It was once thought that the stone circles, with walls as high as three feet tall, were pens to hold livestock, but that theory seems impractical. There are no doors or openings for the animals to enter and exit the pens if this were the case. Researchers have been able to determine that the structures are more than 2,000 years old, but their purpose remains a mystery.