Seems very fair to me, I'll get my baseball bat ready though. Having spent considerable time at Stanton Moor in the Peak District it does distress me to see the signs of people having camped there, within the area of the circles itself.

A site like the Nine Ladies is deceptive as many people don't realise that the circle is surrounded by other archeology, including other circles and cairns, a lot of which have never really been properly excavated. Lighting fires and especially leaving rubbish behind spoils it for other people and causes damage beyond repair.

I know you will, but please be sensible! Ask yourself that if you let people camp in your back yard, how would you want them to behave while there and how would you want them to leave it?