Geograph - photograph every grid square

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Auxiliary Unit Operational Base: DoB ID e44892

To the north of Blaenavon, at a remote site far from habitation, and close to the start of the walk to the summit of The Blorenge, are the remains of a secret WWII subterranean structure. In the event that Britain was invaded, it would have accommodated a small covert stay-behind force of men, along with their weapons and explosives. A desperate measure of last resort, recruitment came from able volunteer members of the Home Guard having good local knowledge, such as gamekeepers and farm workers. With a probable life expectancy of two weeks, they would have acted independently conducting sabotage and other nefarious activities against the enemy. Several hundred OBs were known to have been constructed from 1940 onwards throughout England, Wales, and Scotland. An overview of the auxiliary units: Link

SO2610 : Cefn y Galchen - Auxiliary Unit Operational Base (2)