These two images show the Chain Home Low radar station at Treathro as it would have looked in WW2 and as it looks today. Note the blast wall and the high windows protecting the occupiers from bomb blasts.
Garn Fawr (SM 899389): On the hillside there is a two-man coastwatcher’s hut from the First World War. A compass has been carved into a rock alongside. Also on Garn Fawr is one of a pair of aligned buildings used for carrying out tests on low level air to surface vessel (ASV) radar. The companion building at Strumble Head has been renovated and is now used as a bird observatory.
The remains of a WW1 coastwatcher’s hut on Garn Fawr. Coastwatchers with time on their hands carved their names at Garn Fawr.