Substrata 2, also written as Substrata², is a double album by ambient musician Biosphere which was released on 6 June 2001.The first disc is a remastered version of Substrata, and the second disc is a soundtrack for Dziga Vertov's 1929 film Man with a Movie Camera, commissioned by the Tromsø International Film Festival in 1996, plus two bonus tracks from the Japanese version of Substrata (the last two tracks).The cover image is a photograph of Taormina railway station, Sicily.