Crymych Farm (SN182 340): T is was the site of a Royal Observer Corps underground nuclear monitoring post. T is chamber, 4.5m x 2.3m, was made of reinforced concrete and brick and was entered by means of a steel ladder inside a vertical shaft; covering the shaft was a hatch. T e chamber was constructed in 1960 and its present condition is unknown.
April 1946 - Tank Range Crug-yr-hwch, Crymych
Crug-yr-hwch (SN174 328): T is area was extensively used as a tank range during World War Two. Postwar aerial photographs show a considerable volume of tank tracks covering an area from Llainbanal and Siberia in the north to Letty Farm in the south. T ere was also a WW2 Royal Observer Corps post in this area, at SN173 333.
British Grant Tank with dummy gun welded alongside the light slot in the turret, US tanks were similar. Picture courtesy of Mr Adrian James