Stonehenge as seen from the north barrow, Wiltshire County, England. The stone circle was built about 2500 B.C. by a non-writing culture and is composed of earthworks surrounding a circular setting of large standing stones with several hundred burial mounds. Among its many suggested functions are that it may have served as: an astronomical observatory, a religious site, a domain of the dead, or a place of healing. The site has also been connected to Arthurian legend.