We visited long ago in 1988. At that time it was totally devoid of attendants or parking charges. We were free to roam ,cross and climb where we wished, in fact my wife and daughter crossed via the water course tunnel and myself and Andy (our daughter's friend) actually crossed on the very top.It was quite disconcerting to have to pass by people coming the other way,(with 2 kids and a dog!) when there was no protection whatsoever. I have some photos taken of the experience if you would like to see them.