The radar station was part of a chain of coastal defence stations covering the Bristol Channel.
These Coastal Defence Units (CDU) were used to detect low flying aircraft (below 500ft) within 25 miles of the station. Any objects that were detected would be passed onto other CDUs.
The site had emplacements for guns and searchlights with accommodation and toilet blocks also in place. The site was taken over by the RAF after initially being used by the British army.
The site was closed and then blown up in Operation Eyesore to destroy any technology from falling into enemy hands.
The walk to the remains can start from either Llangennith or Rhossili. The initial climb at both ends is very steep and can be testing if not very mobile, but the views from the top are awesome.