WWII Shelter at Shirley Cove. This would appear to have a larger concrete lined nissan hut which was possibly a crew shelter. There is a blast wall covering the entrance. There is a sign showing the structure was built by the Black Watch in WW2.
Adjacent is a small concrete structure which may have been a magazine, the roof is missing.
There is a smaller platform towards the sea which may have been for a gun or Z Battery. No holdfast could be found.
There is a defence position to the rear of these features, SS23-1