OSBM Bolt 

NBM OSBM BOLT LIVING ROCK 5.4M SW FENCE CORNER 2.4M SE SIDE RAILINGS TOP DAM (1st order, new 1980).
Location
Grid reference: NC 5826 0519.
Landranger 16: Lairg & Loch Shin, Loch Naver.
Structure: Rock outcrop.
Waypoint: OS2818.
Neighbouring Flush Brackets
The nearest fundamental bench mark is Lairg (1946),
2.30km to the northwest.
Location
Grid reference: NC 5826 0519.
Landranger 16: Lairg & Loch Shin, Loch Naver.
Structure: Rock outcrop.
Waypoint: OS2818.
Neighbouring Flush Brackets
| G1921 | Lairg, Bridge End House 844.81m to the north. |
| G1849 | Lairg, Sutherland Arms Hotel 1.17km to the north. |
| G1850 | Lairg, Station 1.28km to the south. |
| G1920 | Claonel 1.73km to the west. |
| G1851 | Achinduich 5.26km to the south. |
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