The village Keronvel can be found between St Mathieu (lighthouse) and Le Conquet. There was the AA battery "Erika" with 5 guns of 7.5 cm in field emplacements. For low incoming airplanes there were 2 cm guns. Nearby lies a very nice Vf for communications.
The mounting for a 2 cm AA gun on top.
There is a room underneath it.