1941-43. Group of 5 perimeter air-raid shelters set in open landscape to SW of former Royal Naval Air Service (RNAS) airfield at Twatt, (former HMS Tern). Rectangular-plan; earthwork covering.
Location map of Twatt Airfield (Former Hms Tern), Air-Raid Shelters, Birsay and Harray, Scotland. Click to enlarge.
Aerial view of Twatt Airfield (Former Hms Tern), Air-Raid Shelters, Birsay and Harray, Scotland. Click to enlarge.
