I spent the night on this earthwork in 1972

adventures, anybody?
This is a recent picture. I spent the night on this earthwork in 1972 for some reason. Next night I spent some hours alone in the centre of Stonehenge itself. One could get away with that kind of stuff in those days.
In a small and brief way, I contributed to the ancient monument by leaving a scatter-cushion sized flat stone on top of the earthwork shown bottom left of picture, brought up from Cornwall the previous summer.
When I returned to retrieve it in 1976, I found that it had been used as an altar - it was littered with hippie detritus:- candle remains, roaches and joss-stick ends. A beaten path had been trampled around it.

click for artist's impression of my bit

it's a drag...