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OSBM Bolt 
OSBM BOLT CUL NW SIDE RD 214M SW MS FORT AUGUSTUS 3 - 3rd order mark; verified 1971; perhaps a replacement for original 3GL Bolt nearby.
Location
Grid reference: NH 3975 1138.
Landranger 34: Fort Augustus, Glen Albyn & Glen Roy.
Structure: Culvert.
Waypoint: OS2531.
Neighbouring Flush Brackets
The nearest fundamental bench mark is Loch Tarff,
3.11km to the southeast.
Logged Visits
Logged on 22nd November 2007 by dal. Condition: Couldn't find it.
OS database: NH 3975 1138 (cf. 3GL NG 3989 1155, OSBM BOLT CUL NW SIDE RD 214M SW MS FORT AUGUSTUS 3, Levelled to a height of 20.5274, 0.1m above ground.
I looked at NH 3975 1138 - no sign of a culvert. Did find a culvert 150m SW, but it was very overgrown, couldn't see a bolt there, and it would not have been above ground (but I might have missed it). Worth another look at the original grid ref. Note my GPS was not very accurate among the trees.
Location
Grid reference: NH 3975 1138.
Landranger 34: Fort Augustus, Glen Albyn & Glen Roy.
Structure: Culvert.
Waypoint: OS2531.
Neighbouring Flush Brackets
| G1041 | Portclair Burn Bridge 2.82km to the northeast. |
| G1042 | Fort Augustus 2.91km to the southwest. |
| G1043 | Loch Uanagan Farm 4.64km to the southwest. |
| G1040 | Invermoriston 5.87km to the north. |
| G4537 | Levishie Burn Bridge 6.18km to the north. |
Logged Visits
Logged on 22nd November 2007 by dal. Condition: Couldn't find it.
OS database: NH 3975 1138 (cf. 3GL NG 3989 1155, OSBM BOLT CUL NW SIDE RD 214M SW MS FORT AUGUSTUS 3, Levelled to a height of 20.5274, 0.1m above ground.
I looked at NH 3975 1138 - no sign of a culvert. Did find a culvert 150m SW, but it was very overgrown, couldn't see a bolt there, and it would not have been above ground (but I might have missed it). Worth another look at the original grid ref. Note my GPS was not very accurate among the trees.
If you have any corrections or additions to this record, please let us know.