The tunnel travels from the mine site, under Ridge Lane. A through journey is possible although wellingtons would be a good idea. The track continued through to Dalehouses then into a second tunnel which emerges at Port Mulgrave.
Little remains visible at the actual mine site, although there is a large collapse due to the culverted stream running underneath.
A large concerete block is one of the few remains of the mine site.
But its more fun in the tunnel.