Burntwick is one of the more remote islands in the Medway estuary - and surely one of the least accessible spots in south-east England (not to mention desolate!). The structure at the end of the spit could well be a World War 2 pillbox, and I would guess that the larger ruin also served some military purpose.
Uploaded to Geograph by Stefan Czapski on 12 October 2014
Photo © Stefan Czapski, 12 October 2014.
Licensed for reuse under this Creative Commons licence