A 4.88ha area of the quarry site was subject to a SMS investigation in 2015. This strip area was located north of areas previously investigated in 2012 and 2014 that contained prehistoric pit scatters and ditches and ponds that related to the post-medieval agricultural landscape. A small quantity of pits of Late Bronze Age to Early Iron Age date were recorded, together with a larger quantity of undated pits which are very likely to also be of a similar period. These are part of the wider scatter of prehistoric pits, particularly recorded elsewhere on the west side of the quarry. An undated waterhole or well-type feature may also have been of late prehistoric date. Ditches define boundaries of parts of the post-medieval land enclosure system. Most of these appear on late 19th and early 20th century OS mapping and define rectilinear fields that existed until the construction of the WW2 airfield.
M Atkinson (Fri,) studied this question.