there was also a royal observer corps 'orlit' type surface observation post on the popeley fields around one third of a mile from the gomersal cricket ground. this was active throughout the war and manned day and night. in the 1960s on the same site a nuclear-blast-proof underground bunker was constructed as a monitoring post, one of over 1,500 constructed in the uk, for use in measuring direction, strength of blast and fallout in the event of the uk coming under nuclear attack. the roc stood down during the late 1980s with the reduced threat of the cold war and the bunkers were abandoned and sold or given back to the land owners.