Thomas, that looks like a template Stones's Tongue & Unit stage on that Knebworth clip.. or was it an original?
Quite right Steve, a Stone's stage. I'm guessing it was the original as the RS were the headline act that year, although I recall my mates returning and commenting that the RS weren't very good but that Ronnie and Co were amazing, which they certainly are on the video.
atb
I remember Knebworth 1976 & Channeling Max Boyce "I was there"
I went to see the Stones and had barely heard of Lynryd Skynryd beforehand but they certainly stole the show