lwl industrial museum henrichshutte hattingen, north rhine-westphalia, germany

furnace north rhinewestphalia abandoned blast blastfurnace cast house closeup decommissioned details disused factory foundry framework germany heritage historic history industrial museum industry inside iron ladder lost places machinery manufacturing metal metallurgical metallurgy old pipe plant production ruhr area rust rusted rusty scrapiron scrapmetal stairs steel making mill steelworks strength technology vertical workshop