The disused, Victorian, Cwmorthin Slate Mine is in Blaenau Ffestiniog, North Wales, UK. It comprises of many miles of tunnels which are mostly between 100-150 years old. During its operational years it was merged into the nearby Oakley slate mine and is considered to be the largest slate mine in the world. Today it is a maze of crumbling, dark passages, littered with items the miners left behind. A rusting old tea pot sits onto of slate slabs, cut ready for transport out of the mine. Hobnail boot footprints are still in the mud. Railway tracks that go nowhere and broken winding mechanisms. To extract slate and dig tunnels, the miners would drill several feet into the rock and pack the hole with explosives. The resulting rubble and slate could then be removed and further slate extraction could take place. There are many places where the drill holes are visible, one is shown in the pictures below. It's a fascinating insight into a lost world.
Thames - Source To Sea Through the Seasons
BLOG. Follow the one-year photographic exploration of the Thames