Several mineral veins of copper, lead, tin and silver were discovered and mined on the north-west slope of the Křížová Mountain. The first attempts to mine ore were made in the second half of the 15th century.

Mostly silver-bearing galenite and copper ore chalcopyrite were mined here. In 1782 a nobleman, Jan of Edenbruk, founded a mining company, deepened the existing galleries and established a new gallery of St John the Evangelist. Before the end of the 18th century mining was stopped as the yield was very low and by 1910 the mines were closed for good.

The main drift-way of the St John the Evangelist gallery has approximately 440 m and in the middle there is a larger area dug out, called the "chapel" with a carved out altar and a wooden cross. The gallery was officially made accessible to the public in 1999.