Over 1,500 Royal Observer Corps posts were built across the UK in the late 1950s and early 1960s to allow volunteers of the ROC to monitor the effects of any nuclear blasts. Observers were prepared to abandon their families to sleep and work in these small underground bunkers in the event of a nuclear exchange with the Soviet Union, all whilst regularly exposing themselves to deadly radiation to change the post’s pinhole camera which would have been mounted next to the entrance shaft.
At Cliffe, the remains are still visible above the surface as of June 2021 with the entrance shaft still intact, although debris thrown in is blocking the entrance. This post was in operation from 1961 to 1968.
Our video below provides a look at the ROC post.
A view towards Manor Farmhouse; dating to the late sixteenth century although with much rebuilding following a fire c.1910.
Source: Subbrit