The train goes 2.3 km into the mountain, and it clatters violently, so we have to use earplugs.
As well as i remember, we were equipped with carbide lamps in 1958, but now the carriages have electric lighting.
Our noisy trip ends at Kongens Gruve (The King's Shaft), which is the oldest and deepest of the mine shafts: Founded in 1623 and finally 1000 meters deep from the surface to the bottom.