Goseck circle
The Goseck circle (German: Sonnenobservatorium Goseck) is a Neolithic structure in Goseck in the Burgenlandkreis district in Saxony-Anhalt, Germany.
Its construction is dated to approximately the 49th century B.C., and it seems to have remained in use until about the 47th century B.C. It may thus be the oldest and best known of the circular enclosures associated with the Central European Neolithic. Currently, the site is presented officially by the state archaeologists and the local association that looks after it as a ritual or cult structure.
The circle consists of a concentric ditch 75 metres (246 feet) across and two palisade rings containing entrances in places aligned with sunrise and sunset on the winter solstice days and smaller entrances aligned with the summer solstice.