ROC monitoring posts

This is a Royal Observer Corps Orlit Type A monitoring post, built in 1953. It is one of two standard designs manufactured by Messrs Orlit Ltd for the Royal Observer Corps. The post is constructed of prefabricated concrete panels bolted together, with a concrete slab roof over the southern section. The rest of the structure originally had a removable corrugated steel roof cover, which is now missing. The post is rectangular, measuring approximately 3.05 metres by 2.03 metres. A low entranceway, without its door, is located at the south-east corner, leading into the narrower, roofed section which served as a shelter and storage area. A lower doorway connects the shelter to the former open observation area, where instruments and charts were housed. The interior has been completely stripped.

This is a Royal Observer Corps underground monitoring post dating from 1961, built to a 1956 standard design by the Air Ministry Works Department. The post is set within a compound defined by concrete posts and a metal gate. Constructed of reinforced concrete with a compacted earth covering, it has a roughly rectangular plan and appears as a low, elongated mound. A raised concrete entrance hatch is positioned towards one (west) end, and a smaller, raised concrete ventilator is located towards the other end. A single metal pipe between the openings served as the mounting for the fixed survey meter probe. Adjacent to the entrance hatch is the mounting for the Ground Zero Indicator, a device used to detect the direction and altitude of nuclear explosions. The entrance hatch has been boarded over, and the underground chamber has been completely infilled with earth and rubble. Structures related to radar testing, including a corrugated hut, a disused winch, and several concrete blocks, are not considered to be of special interest.