The Lunar landscape exterior was constructed by Jack Poplin and his team on Soundstage #2 at KTTV and the Moon backdrops were from M.G.M. The jagged mountains and rock columns were placed so as to hide the gaps in these backdrops. The Moon surface itself was a four inch deep layer of sand that had been dyed different colours to give the moonscape different gradations of tone when filmed in black and white. Paintings by astronomical artist Chesley Bonestell were used as background plates for sequences of the two Moonstones moving over the lunar surface.