Craster radar station - Credit: Wikimedia Commons
Craster radar station (also known as RAF Craster), was a Chain Home Low (later a Chain Home Extra Low) Second World War radar site at Craster in Northumberland, England. The radar site is north of the village of Craster on an escarpment overlooking the North Sea. The site was opened by early 1942 and was staffed initially by the British Army, but later came under the control of No. 73 Wing of the Royal Air Force, part of No. 60 Group. It closed in 1944 and was later used as a PoW camp. Read more on Wikipedia
Source: en.wikipedia.org