Only one (possibly two) persons have ever 'sussed' that stone row, which - stylistically - could just as well have been erected in Bolton (the rest of the stones - the little kings - will have been plundered). I've just fished a tape of a Planet Gong concert, at Bolton's Albert Hall in 1977, from the net. Bootleggered.
I don't like the mauve shed much - I'm still filming on the Quayside below, in 8mm Kodachrome (it makes everything look like 1977).