The Kristiansand area has been inhabited since prehistoric times. In 1996, the well-preserved skeleton of a woman dating to approximately 6500 BC was discovered in Søgne in western Kristiansand. This demonstrates very early habitation of the archipelago. Grauthelleren ("Grathelleren"), located on Fidjane, is believed to be a Stone Age settlement. The first discovery in Norway of a Sarup enclosure (a Neolithic form of ritual enclosure first identified at Sarup on the Danish island of Funen) was made in 2010 at Hamresanden and dates to c. 3400 BC. Archaeological excavations to the east of Oddernes Church have uncovered rural settlements that existed during the centuries immediately before and after the start of the common era. Together with a corresponding discovery in Rogaland, these settlements are unique in the Norwegian context; isolated farms, rather than villages, were the norm in ancient Norway. Other discoveries in grave mounds around the church, in the Lund section of the city, indicate habitation beginning c. 400 AD, and 25 cooking pits that were found immediately outside the church wall in 1907 are probably even older. One of the largest pre-Christian burial grounds in South Norway was formerly located to the south and west of the church. A royal centre is thought to have existed at Oddernes before 800, and the church was built around 1040.