Great photos Rodel. I was aware of the Chopwell Railway up from Derwenthaugh, but this line is new to me - nice to discover info about "new" railways!! Looking on the OS map site, it appears that most of the trackbed of this line still exists from the site of the drift into the hillside at Hoodsclose to Chopwell. Must get up there to have a look this summer when I'm in the area.
Cheers
Alan