A semi-circular amphitheatre (measuring 26m across and 17m deep) has been excavated into the sand dunes to act as a stop-butt for missles fired from the large testbed track to the east (see NPRN 407993). The stump of a metal post (target?) is located halfway up the slope at the back of the amphitheatre.

Maritime Officer, RCAHMW, March 2010.