Europe alone holds some 35,000 megaliths, including many astronomically-aligned stone circles, as well as tombs (or cromlechs) and other standing stones.
Though still old, at that age, Stonehenge may have been one of the youngest such stone structures to be built in Europe.
But even these primitive sites are at least centuries younger than the world’s oldest known stone circle: Nabta Playa.
Located in Africa, Nabta Playa stands some 700 miles south of the Great Pyramid of Giza in Egypt.
It was built more than 7,000 years ago, making Nabta Playa the oldest stone circle in the world — and possibly Earth’s oldest astronomical observatory.
It was constructed by a cattle worshiping cult of nomadic people to mark the summer solstice and the arrival of the monsoons.
The statue of Ramses the Great at the Great Temple of Abu Simbel is moved during the construction of the Aswan Dam. »
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