Sometimes human remains were deposited in the chambers over many centuries.[17] For instance, at West Kennet Long Barrow in Oxfordshire, southern England, the earliest depositions of human remains were radiocarbon dated to the early-to-mid fourth millennium BCE, while a later deposition of human remains was found to belong to the Beaker culture, thus indicating a date in the final centuries of the third millennium BCE; this meant that human remains had been placed into the chamber intermittently over a period of 1500 years.[17] This indicates that some chambered long barrows remained in sporadic use until the Late Neolithic.[41]