Previously unseen footage of Led Zeppelin performing at Michigan’s Pontiac Silverdome in 1977, has emerged online. The 23-minute clip captures the band playing to – what was then, a world record crowd of 76,200, for a single-act show.

The 8mm film, shot from the audience, has been restored and was posted by Guitar World.

At the time, Zeppelin was touring in support of their seventh studio album, Presence. Tickets for the concert sold for $10.50.