A small underground chamber from where it was intended to monitor radioactive fallout in the event of nuclear attack. The majority were built between 1956 and 1964, although construction continued into the early 1970s.
![The underground Royal Observer Corps post at Creefer's Hill in Beetley was used during the Cold War](http://hbsmrgateway2.esdm.co.uk/norfolk/DataFiles/FullImages/840.jpg)
The underground Royal Observer Corps post at Creefer's Hill in Beetley was used during the Cold War. (© NCC)