The Senegambian stone circles lie in The Gambia north of Janjanbureh and in central Senegal. The stone circles and other megaliths found in Senegal and Gambia are sometimes divided into four large sites: Sine Ngayene and Wanar in Senegal, and Wassu and Kerbatch in the Central River Region in Gambia.
But the generally accepted range is between the third century B.C. and the sixteenth century A.D. Archaeologists have also found pottery sherds, human burials, and some grave goods and metals around the megalithic circles.