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OSBM Bolt: Burn of Basta 
NEW OSBM BOLT CUL 14.7M W SIDE RD 1.0M S C BURN OF BASTA (56.912m above Lerwick datum, 2nd order, new 1979).
Location
Grid reference: HU 5114 9498.
Landranger 1: Shetland, Yell, Unst & Fetlar.
Landranger 2: Shetland, Sullom Voe & Whalsay.
Structure: Culvert.
Waypoint: OS2611.
The nearest fundamental bench mark is Duncansby Head, 250.87km to the southwest.
Location
Grid reference: HU 5114 9498.
Landranger 1: Shetland, Yell, Unst & Fetlar.
Landranger 2: Shetland, Sullom Voe & Whalsay.
Structure: Culvert.
Waypoint: OS2611.
The nearest fundamental bench mark is Duncansby Head, 250.87km to the southwest.
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