Entering the Niwot Ridge Biosphere Reserve Mount Albion Arikaree Peak & Niwot Ridge, from left to right, above the highest of Green Lakes Some of the third class terrain en route to Niwot Ridge Skiers on Isabelle Glacier Navajo Peak Arikaree Peak from Navajo Peak North Arapaho Peak from Navajo Peak Some third class just below the summit of Navajo Peak Map ![]() Photos |