“Planet Caravan” is one of Sabbath’s lighter songs, featuring jazzy guitar playing, congas, and ethereal vocals provided by a Leslie speaker. It has a spiritual successor in “Zeitgeist” from 2013’s 13. A version with different lyrics was included on the deluxe reissue of Paranoid. It was also covered by Pantera in 1994, reaching #21 on Billboard’s Mainstream Rock Tracks and hitting #26 on the UK Singles Chart.

According to Geezer Butler, the song is about drifting through space and beyond with a lover.