In 1937, Davis paid for Jessup to run a second excavation at the site. This time lasting for eight weeks, the "primary object" of this excavation was to gain good dating evidence for the creation of the tumulus, something that had not been obtained in the 1936 excavation. The lithics discovered at the site were analysed by the archaeologist Grahame Clark, while the pottery was examined by his colleague, Stuart Piggott. Jessup's investigation confirmed Thurnam's view that the tumulus was a Neolithic long barrow, ascertained that the northern end had been destroyed, and revealed both the polished stone axe and the Romano-British burials.