You get into the trolley and drive up the hill, through the tunnel inside which you drive with a roar a couple of kilometers deep (ear plugs are issued), and you find yourself in the heart of an already inactive huge silver mine, discovered back in the 17th century. Walk with a guide through the tunnels (in which, by the way, it is always +6°C), listen to a story in excellent English, and look at the insides, rocks and realistic models of how the process went. You will see, for example, a working wooden elevator as far back as 1881, moving workers between levels.→