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OSBM Bolt: by Warth Hill 
OSBM Bolt on living rock [3GL].
Location
Grid reference: ND 3738 7003.
Landranger 7: Orkney - Southern Isles.
Landranger 12: Thurso & Wick, John O'Groats.
Structure: Rock outcrop.
Waypoint: OS1934.
Neighbouring Flush Brackets
The nearest fundamental bench mark is Duncansby Head,
1.48km to the north.
Third Geodetic Levelling, Scotland (1956-68)
This bench mark was used during the Third geodetic levelling, Scotland. It was included on the Duncansby Head to Lybster levelling line. The surveyor's description was OSBM Bolt on living rock.
Logged Visits
Logged on 27th April 2007 by iainmac. Condition: Couldn't find it.
Location
Grid reference: ND 3738 7003.
Landranger 7: Orkney - Southern Isles.
Landranger 12: Thurso & Wick, John O'Groats.
Structure: Rock outcrop.
Waypoint: OS1934.
Neighbouring Flush Brackets
| G1810 | Red Road Cottage 1.09km to the southwest. |
| G1821 | Bridge of Freswick 2.31km to the south. |
| G2076 | John o' Groats, Caber Feidh 2.83km to the north. |
| G1313 | Huna 3.29km to the north. |
| G1312 | Quoys 3.76km to the northwest. |
Third Geodetic Levelling, Scotland (1956-68)
This bench mark was used during the Third geodetic levelling, Scotland. It was included on the Duncansby Head to Lybster levelling line. The surveyor's description was OSBM Bolt on living rock.
Logged Visits
Logged on 27th April 2007 by iainmac. Condition: Couldn't find it.
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