http://www.camelotmedia.com/enchantment.html
The Stark's film at this site, shows many of the places you asked about. I recall a map that is shown at the end - drawn over the years by the family. Check it out to learn some more ... like Merlin's tower ... its the big black rock ad the end of Lake Viviane. Bill and Peg's camp (Marmet manor) was under Merlin's shadow next to the biggest larch in WA (the world?) ... so Peg told me the last time I had honor of visiting the Starks In camelot.
My 20 yr old and I leave Fri for the Sat pot luck and services Sun at Sleeping Lady for Bill. Glad I found this web page ... helping with my processing ibthe loss to all the extended family(s). I climbed when I lived with the Starks in 79-82 ... now I paint in W/C from what I remember of the wild places I us to go. I also work for sustainability in state parks - Bill's friendship lead me to the work I do now.
Check out the movie -- and I will take a few hikes this week end too, I do miss der town and the years at the Chelet and the High camp!