This is the cover of Rainbow's Rising which was the band's second album and it came out in 1976. It was done by Ken Kelly who has also done covers for KISS, Manowar and he has done a lot of fantasy book covers. Fantasy and heavy metal have always gone together. I think this album makes good use of colors, perspectives and the background. I have it on vinyl, CD and cassette and have spent quite a bit of time staring at all of the detail contained in this picture. Rainbow's debut also had a fantasy cover as well. Interesting that as the band became more AOR/mainstream rock their covers would no longer have the same fantasy elements that the earlier ones had.