WW2 Pill-boxes

Warden’s Point on the Isle of Sheppey (one of the markers of the limits of the Port of London Authority in the Thames Estuary). In the distance can be seen: Red Sands Fort, Shivering Sands Fort, Knock John Fort, The Black Deep, Ships on the Sea-roundabout, awaiting the tide, the London Array deep-sea wind farm, France.