If you peer through the mist you can see the remains of one of Henry Vlll's castles (Sandsfoot).
Three posts mid-distance used to hold a notice warning people of torpedo testing.
And the reeds in the foreground edge what used to be a railway line between Weymouth and Portland.
Torpedoes and the Railway - The Encyclopedia of Portland History
Sandsfoot Castle - Wikipedia
Hills in the distance are part of the South Dorset Ridgeway