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

Possible augered hole for modern agriculture based on straight limits and very circular plan. The presence of anthropogenic material in the fill (SU62) can be the result of filling the cut with sediment from elsewhere.