Hmm, glad I wasn’t there.
I was up at Stoke Flat on Sunday and was chatting to a Peak park ranger about various sites in the area, in the course of the conversation he mentioned large numbers of people and remains of camp fires at Nine Ladies but that most other sites seem to go unnoticed by visitors.
There was certainly no litter or crap at Stoke Flat, nothing at Barbrook I and II and at Gardom’s Edge it was just me and the sheep.

-Chris