Castle Bloody souterrain - rock construction is not part of the souterrain.
Castle Bloody is a prehistoric feature on the island of Shapinsay, Orkney, Scotland. Hogan observes that while the feature is marked as a chambered mound on the UK Ordnance Survey map, the structure is more properly and specifically classified as a souterrain or earth house. Slightly to the north is located the ruined historic Linton Chapel.
Coordinates: 59°01′57″N 2°48′37″W / 59.0324°N 2.8102°W