OSBM Bolt: by Loch Carron 

OSBM BOLT EMBANKMENT RLY NW SIDE RLY LINE 241.0M SW FROM C STR (evidently placed for 2GL line Achnasheen to Dornie, but not incorporated, presumably as levelling line diverted).
Location
Grid reference: NG 9154 3803.
Landranger 25: Glen Carron & Glen Affric.
Structure: Unknown.
Waypoint: OS2592.
Neighbouring Flush Brackets
The nearest fundamental bench mark is Dornie,
12.57km to the south.
Location
Grid reference: NG 9154 3803.
Landranger 25: Glen Carron & Glen Affric.
Structure: Unknown.
Waypoint: OS2592.
Neighbouring Flush Brackets
| G1745 | Attadale Station 1.39km to the northeast. |
| G1927 | Finderne 2.25km to the northwest. |
| G1931 | Oak Bank 2.58km to the west. |
| G1923 | Lochcarron School 2.65km to the north. |
| G1744 | Cnoc Ban 3.17km to the northeast. |
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