Discover the world of mining in a mysterious underground environment at the Steenkolenmijn (coal mine) in Valkenburg. First, you visit an underground cinema with a special atmosphere. There you watch a unique 1960’s promotion film from ‘De Staats Mijnen’ (the State Mines) which provides good insight into all aspects of mining. After the film, a former miner guides you through the world of coal extraction. Fourteen former miners, with a wealth of underground experience, now work as guides in the mine. Each guide tells his own story, with the necessary humour, reviving the atmosphere of days gone by