Stylish film of the British progressive rock band Pink Floyd in 1971 performing a concert with no audience, in the ancient Roman Amphitheater in the ruins of Pompeii, Italy. There are two versions of the film: the concert only (around 60 minutes), and a longer version (85 minutes) featuring the concert interspersed with interviews and footage of Pink Floyd in the studio working on their next album, the Dark Side of the Moon.