High Quality Content by WIKIPEDIA articles! High Quality Content by WIKIPEDIA articles! High Quality Content by WIKIPEDIA articles! Blood Mountain is the third full-length studio album by metal band Mastodon. The recording of the album finished in April 2006 and it was released on 11 September in the UK and 12 September 2006 in North America. The album in full could be streamed at the band's MySpace page a few days prior to the release. Like Mastodon's previous studio work Leviathan, Blood Mountain is a concept album. According to bass guitarist Troy Sanders, "It's about climbing up a mountain and the different things that can happen to you when you're stranded on a mountain, in the woods, and you're lost. You're starving, hallucinating, running into strange creatures. You're being hunted. It's about that whole struggle." The album includes guest appearances by Scott Kelly of Neurosis on "Crystal Skull", Joshua Homme of Queens of the Stone Age on "Colony of Birchmen", as well as keyboard player Isaiah "Ikey" Owens and singer Cedric Bixler-Zavala of The Mars Volta on "Pendulous Skin" and "Siberian Divide", respectively.