Tellure Park is built above a network of mining galleries, some dating from the Middle Ages. From 1549, the silver fever spread throughout the region, which welcomed around 3,000 miners. Saxon workers brought innovative techniques, in particular concerning the evacuation of underground water. They made it possible to descend deeper into the bowels of the mine. The lords of Ribeaupierre and the dukes of Lorraine shared the riches of the subsoil. Over a century, the miners emptied about forty veins of silver, lead, copper, and cobalt ore.