In reply to keith-ratcliffe:
I'd agree re the mono shots.
We were really lucky when we visited. We were staying at a cottage nearby. The first visit was a sunny afternoon when there just seemed to be a handful of people there - and the second visit was to watch the sun come up, just my wife and I, and a group of three doing some kind of ritual.
It's an extraordinary place, and I'm sure we were lucky to have such good, peaceful visits!