The site of intensive lead mining in the 18th and 19th centuries, the valley still contains much evidence of its industrial past.
Streams were dammed, and the water released as a torrent to scour soil off the surface and reveal lead ore (galena) seams.
Large areas of the upper valley are covered in spoil heaps from the mining activity, and a number of buildings remain.
[2] The Sir Francis mine opened further down the valley in 1864 to exploit deeper seams, and was the first to use compressed air drills.
[4] As the valley descends southwards the scenery changes from the industrial to become a mixture of woodland and sheep pastures, before the beck joins the River Swale in the village of Gunnerside.