guest [
OSBM Bolt: Innan Neb 
OSBM Bolt, gun emplacement, 0.9m S of manhole cover.
Location
Grid reference: ND 3489 9235.
Landranger 7: Orkney - Southern Isles.
Structure: Unknown.
Waypoint: OS2110.
The nearest fundamental bench mark is Duncansby Head, 20.98km to the south.
Location
Grid reference: ND 3489 9235.
Landranger 7: Orkney - Southern Isles.
Structure: Unknown.
Waypoint: OS2110.
The nearest fundamental bench mark is Duncansby Head, 20.98km to the south.
If you have any corrections or additions to this record, please let us know.