This document draws together information on a possible post alignment observed on the southern side of the old Must farm Quarry Pit, Whittlesey, Cambridgeshire. This assessment has been commissioned by Martin Redding, who found the timber work in 1999, and has inspected it several times since. This report also contains notes and photographs taken by Ben Robinson 1999, who saw the timbers when the water levels were lower than present and the timbers were still exposed. Following the review of evidence, the CAU retrieved timbers from the foreshore for radiocarbon dating, and excavated two trenches south to confirm the presence of any further wooden structures.