A rusting old pipe runs along an artificial ledge from higher up the gill. This is the point where it descends towards the abandoned slate workings where it probably provided hydraulic power to operate machinery or generate electricity for the same purpose. More information about the workings here http://www.cumbria-industries.org.uk/wrengill.htm
Uploaded to Geograph by Karl and Ali on 17 May 2013
Photo © Karl and Ali, 17 May 2013. Licensed for reuse under this Creative Commons licence