Wish I could see Ammons speak. The area of Nepal that he has been doing his work in is Dolpo, also made "famous" by Peter Mathiessen's book, "The Snow Leopard." My wife and I had the good fortune to trek in neighboring Mustang several years ago. That part of the Himalaya, in the rainshadow of Annapurna and Dhalagiri, is pretty mindblowing. It's like experiencing Tibet before the Chinese erased the Tibetan culture, then brought it back as a theme park for tourists. Don't miss this whitewater pioneer. A nice bonus is being able to help some of the most endearing mountain people in the world.