It is also not known where the act of excarnation took place prior to the deposition of bones within the chambers. Some human bones have been found in the ditches of causewayed enclosures, a form of Early Neolithic earthen monument, while evidence for the Early Neolithic outdoor exposure of corpses has also been found at Hambledon Hill. The postholes found in front of many long barrows may also have represented the bases of platforms on which excarnation took place.