The philosophy of an urban explorer is, Take only photos and leave only footprints.

Alderbury ROC Post.

The Royal Observer Corps were in existence from 1925 to 1995 and their first significant operation was to act as aircraft spotters in WW2 where their task was to radio in any sightings of enemy aircraft or flying bombs. After the war ended they were briefly stood down after being in continuous operation from September 1939 to May 1945 then as the peace transitioned into the Cold War their role changed. The new role was to report nuclear explosions and monitor the nuclear fallout, to do this the crew of three would have to be prepared to spend up to 21 days underground in a 16ft x 7ft x 7ft bunker, between 1958 and 1968 over 1,500 of these bunkers were built across the country.

This post is south of Salisbury and in relatively good condition. However it was used by the BBC in 2001 for filming.