Robert Plant performing on stage at the Wembley Empire Pool in London, England on 23rd November 1971. Photo by Michael Putland.
The two Wembley shows, aka, “Electric Magic,” were on Nov. 20 and 21. The 23rd was at the Preston Public Hall. I’m thinking that this picture is from one of the former, but documentation for Led Zeppelin in 1971 is notoriously spotty.
In any case, a great photo. :-)