"Dmitry" wrote in message
news:4nDmd.96699$HA.7492@attbi_s01...


I don't really understand how one can survive the entire day on elevation
close or above 10K feet in dry cold air sweating like crazy without
constant
use of a camelbak.

Well these days it seems people can't understand how people ski without a
helmet or carve on skis longer than 150. Believe me, it's easy. But I didn't
really sweat that much.