Thorne Island
Wales, United Kingdom
Thorne Island is a rocky islet and part of the community of Angle, Pembrokeshire, Wales, with an area of 2 acres (8, 100 m2), dominated by a coastal artillery fort built to defend the Milford Haven Waterway in the mid-19th century. It has been the site of a number of shipwrecks, including one in 1894 that was carrying a cargo of Scotch whisky.
Fort data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).