Excavations in 2009 had explored Tomb 15 in the centre of the Common. Trench M (7m x 2m) extended the 2009 excavation the west, where Lukis had reported the wall in Trenches C and L linked up with Tomb 15. Trench M revealed no trace of such a wall. It also confirmed that the cobble spread around Tomb 15 was not edged by a kerb, and it allowed further investigation of the geological substrate, coming down onto redeposited raised beach at the base of the loessic buried soil. In the upper surface of the buried soil, fragments of prehistoric pottery and worked and burnt flint were present.
Text and photographs copyright Chris Scarre, Department of Archaeology, Durham University.