Ward Hill Radar Station, South Ronaldsay
The radar station on top of Ward Hill, South Ronaldsay's highest point, formed part of the Chain Home Low System in WWII. This nation-wide system was established to detect the precence of aircraft or ships around the coasts of Britain. Several buildings survive, including the engine house with its engine mounting block. There is a large brick structure and the remains of several concrete hut bases, one with metal rings attached. The remains of a well-preserved anti-aircraft position can also be seen.
About 100 metres south of the radar station lie the partial remains of a searchlight emplacement.