Perhaps of more interest than the aerial bombing target (see my comment elsewhere) is the moving target railway trench running across almost the whole width of the head land. This was build in the late spring of 1941 as part of the targetry for a range for training gunnery recruits to the Royal Armoured Corps. The narrow gauge railway ran between two concrete dugouts. Wood and canvas silhouettes of tanks rank back and fore, perhaps on a small motorised trolley or on a trolley hauled by a winch situated in the larger eastern dugout. The western dugout was for observers to mark the accuracy of the gunnery after each run of the trolley. There is another moving target trench with its attendant dugouts on the left edge of the shot. There were also two isolated observation dugouts on this range, one of which is visible just of the western edge of the bombing circle. These were for the operation of pop-up targets. The second such dugout has been removed and stood on the other side of the valley running down New Quay. Off shot to the north is the concrete firing triangle from which tanks fired at the targets.

Thanks Adrian for the extra information - I've now added more to the description and signposted your comment, thanks for taking the time - Helen (RCAHMW)