• dug between 1891 and 1963;
• more than 80 m below ground;
• large tunnels on two different levels;
• impressive cavities left over by the miners;
• machines and tools from the 1860 to 1997.

From Tuesday to Sunday – Departures 14:30, 15:30 and 16:30;

Rates: adults 9€, students, 7€ and children 5€