Webmuir's first documented ascent of mount shasta was in the fall of 1874, followed by two more climbs in the spring of 1875. His experiences during these expeditions were. Webduring the ascent the skies were sunny and clear, although mt. Shasta had a lenticular cloud on the summit. Webmount shasta, a charming mountain town in northern california, offers thrilling outdoor adventures, from hiking and skiing to kayaking and climbing, all set.