For almost a millennia, Swedes have mined in the central region of Bergslagen. The oldest known mine structures can be found in Norberg. By the late 1950's, Norberg's Mimerlaven became the centerpiece as the largest ore extraction facility in the region. Reaching 64 metres above ground and stretching far beneath, it was the connecting node for an entire industrial sector.

Operations ceased in 1981. Since then the facilities have remained almost completely unaltered. In awe of its spectacular aesthetic capacities, it remains the attraction and motivation for a two-decade, non-profit festival organisation, in search of sublime experiences in sound and milieu.