Mastodon is nearly complete with the recording of the new full-length, Blood Mountain, their first for Warner Bros. The album is set for a release in August and will feature guest spots from The Mars Volta frontman Cedric Bixler Zavala on the track "The Siberian Divide", as well as appearances from Scott Kelly of Neurosis and Ikey Owens of The Mars Volta. Other song-titles include "Circle of Cysquatch," "Hunters of the Sky," "The Sleeping Giant," "Bladecatcher," "The Colony of Birchmen" "Pendulous Skin," "Capillarian Crest," "Hand of Stone," "Crystal Skull," "The Wolf is Loose," and "This Mortal Soil." More on the album can be found here.