Limited double 180gm yellow vinyl LP pressing of this 1974 album in gatefold sleeve. The group"s fourth studio album, it was the first by a new line-up that included Simon House on synthesizer, Mellotron and electric violin; absent were Robert Calvert, who had previously contributed lyrics, vocals and spoken word interludes, and Dik Mik, who provided electronic effects. House"s addition was generally seen as enhancing the band"s musicianship and sense of structure, though perhaps at the expense of the improvisational nature of earlier work. The cover of a derelict spaceship in the mists of an alien lagoon was painted by the band"s regular artistic collaborator, Barney Bubbles.