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Triangulation Pillar OSBM 10642: Keirfea Hill   

Grid reference: HY 42328 32116.
Landranger 5: Orkney - Northern Isles.
Landranger 6: Orkney - Mainland.
Explorer 464: Orkney - Westray. Rousay & Eday.
Waypoint: TP4148.

Neighbouring Triangulation Pillars
10643 Knitchin 3.37km to the south.
10647 Brae Of Moan 4.80km to the west.
10458 Onziebist 5.75km to the southeast.
10799 Vishall Hill 7.93km to the southwest.
10764 Gairsay 9.94km to the south.
The nearest fundamental bench mark is Duncansby Head, 60.85km to the south.