The large Iron Age square barrow cemetery at Wetwang/ Garton Slack was excavated from 1963 until 1989 by the Granthams, T.C.M. Brewster, followed by John Dent.  In 1971 the first chariot burial was excavated at Garton Slack with three excavated at Wetwang Slack in 1984 by John Dent. The chariot burials were only part of a large cemetery. Advances in ancient DNA analysis has enabled extraordinary familial links to be made between occupants of the cemetery and demonstrate connections elsewhere. Professor Armit has been leading a project in collaboration with Professor David Reich and the team at Harvard Medical School with astonishing results shedding new light on Iron Age society in this region.