The location of the site is beautiful but the site itself can be tricky as the light can make the pictographs invisible, but when you do see them you feel vindicated for having checked out the museum and for waiting for the light to change. The boards which have been placed around the site are very helpful but the light on the rocks really does impact on what you can and can't see. The valley scenery is very evocative and, as we were alone on our walk around the site you can imagine the lives of the people living in the valley and the creators of the site.
The campsite, whilst basic, is one of the best particularly because you can swim in the river which seemed to be the reason most other people were visiting the site. If you do make the visit to the site stay in the campsite, enjoy the river ( you just float with the current) and try and see the images in different lights.