26 July 1963
Bay of Sannick; Canisbay; CAITHNESS; Scotland
Coordinates (lat, lon): 58.643250, -3.033254
Oblique aerial photograph taken Facing North West.
South of the Duncansby Head lighthouse, in a square, wire-fenced enclosure, is a Royal Observer Corps underground monitoring post. Built during the Cold War to a standard pattern across the UK, these bunkers housed three observers who were trained to measure and report the power and location of nuclear detonations in their areas.