INFORMATION:

Map/Plan of this part of Portishead. The road is the coast road from Clevedon to Portishead. On the crossroads is a bungalow which was the guard room, the blue P is where to park, the yellow circle is the AA site & the yellow square is one of three ammunition rooms.
On the coast you can see the fuel depot quite clearly. I think it had links with Wales via under water pipes?