1941-43. Pair of partially dug-in, hexagonal, WWII pillboxes with grass roof coverings located at S and E perimeters of former Royal Naval Air Service (RNAS) set in open landscape comprising Twatt Airfield (former HMS Tern).
Location map of Twatt Airfield (Former Hms Tern), Pillboxes, Birsay and Harray, Scotland. Click to enlarge.
Aerial view of Twatt Airfield (Former Hms Tern), Pillboxes, Birsay and Harray, Scotland. Click to enlarge.
