Between 2008 and 2015, The Cumbria Amenity Trust Mining History Society -CATMHS-, undertook the Monumental Task Of digging all the 1000 yards of Tunnel collapses from a 1850’s Drainage level so they could access The long lost tilberthwaite copper mine. Follow us exploring the full length of the tunnel , bearing witness To One of the biggest Mine exploration feats in History !!!