The Kłodawa salt mine entered Guinness World Records in 2007. The Kalisz Philharmonic Orchestra played at a depth of 600 m (the deepest in the world) underground. Violinist Dimitry Vasiliev was the star of the concert.
The Kłodawa salt mine entered Guinness World Records in 2007. The Kalisz Philharmonic Orchestra played at a depth of 600 m (the deepest in the world) underground. Violinist Dimitry Vasiliev was the star of the concert.