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OSBM Bolt 
OSBM Bolt in rock [3GL].
Location
Grid reference: NG 8469 2723.
Landranger 33: Loch Alsh, Glen Shiel & Loch Hourn.
Structure: Rock outcrop.
Waypoint: OS1228.
Neighbouring Flush Brackets
The nearest fundamental bench mark is Dornie,
4.04km to the east.
Third Geodetic Levelling, Scotland (1956-68)
This bench mark was used during the Third geodetic levelling, Scotland. It was included on the Dornie to Achnasheen and Spean Bridge to Dornie levelling lines. The surveyor's description was OSBM Bolt in rock.
Location
Grid reference: NG 8469 2723.
Landranger 33: Loch Alsh, Glen Shiel & Loch Hourn.
Structure: Rock outcrop.
Waypoint: OS1228.
Neighbouring Flush Brackets
| G4432 | Nostie Bridge Power Station 530.38m to the east. |
| G4431 | Nostie 1.16km to the east. |
| G4433 | By Lochalsh Dam 1.95km to the north. |
| G1750 | Dornie, by Loch Duich Hotel 3.20km to the east. |
| G1751 | Carr Brae 5.38km to the southeast. |
Third Geodetic Levelling, Scotland (1956-68)
This bench mark was used during the Third geodetic levelling, Scotland. It was included on the Dornie to Achnasheen and Spean Bridge to Dornie levelling lines. The surveyor's description was OSBM Bolt in rock.
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