Remains of the Ordnance Survey camps on Scafell Pike

Several stone structures exist close to the summit of Scafell Pike (978 m) in the Lake District. They are believed to be the remains of Ordnance Survey encampments first established in 1841, as part of the Trigonometrical Survey of Great Britain, and perhaps re-used during re-triangulation of the country in the mid-twentieth century. Although several of the structures may have since been re-modelled by hill-walkers, a thorough survey of the remains would be useful before climate and visitors cause further modifications.