Sighty Crag
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It has an elevation of 520 m and a prominence of 297 m and is classed as a Marilyn. The summit is marked by a wind-worn outcrop of fell sandstone.
The summit of Sighty Crag
N Eng Marilyns
Ordnance Survey
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The Ordnance Survey is the national mapping agency for Great Britain. The agency's name indicates its original military purpose, which was to map Scotland in the wake of the Jacobite rising of 1745. T
Pollokshaws on Roy's Military Survey of Scotland (1747–1755)
The original 1810 draftsman's drawings for the area around St Columb Major, Cornwall.
Detailed scan of a complete 7th series sheet
Grid square TF from the Ordnance Survey National Grid at 1:250,000 scale. Shown: the Wash, the North Sea, parts of Lincolnshire, Cambridgeshire and Norfolk.