Divided into four large sites across Senegal and Gambia, the Senegambian Stone Circles cover an area
Divided into four large sites across Senegal and Gambia, the Senegambian Stone Circles cover an area of approximately 18,500 square miles (30,000 square kilometers). Constructed somewhere between 300 B.C.E and 1600 C.E., the circles consist of approximately 29,000 stones, 17,000 monuments and 2,000 individual sites. That’s a lot! The stones are, on average, 6.5 feet tall (2 meters) and weight 7 tons. They were hewn out of a common rock, laterite, but would have required intricate knowledge of geology, especially since the stones weren’t carved in pieces but rather, like obelisks, hewn out of the rock in solid pieces and dragged to their final locations.More is known about the stones than the people who built them. Since constructing the circles would have required organization, surplus food, and and construction know-how, it is believed the society which built the Senegambian Stone Circles was prosperous and organized. The site in Sine Ngayene is the largest of the four, and several iron smelting sites and quarries were discovered close by. Evidence of hundreds of homes was also found nearby, and layers of materials that indicate four nearly distinct cycles of use. -- source link
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