The Tellure mining park proposes to explore Saint-jean Engelsbourg's silver mine by following the via ferrata it created in 2009. Some portions of the underground path, more or less narrow, still ooze water. Different routes wind between the wells and the galleries dug by human hands since the Middle Ages. In the 16th century, a silver vein in the form of a column 328 ft (100 m) in height was found and completely emptied.