After further study and identification of this area as a quarry, it appears that this is one of a series of cuts into the bedrock associated with quarry machinery. This one, specifically, may have accommodated one of the posts to which cranes’ tie-rods were tied

Based on pottery found, this circular feature is not associated with the cut SU4 which is in very close proximity. It is possibly not a garbage pit because it contains little material culture. Vertical cut marks indicate that this was not an augered hole. Possible posthole for a large post because of the little anthropogenic material found within the sediment of SU137.