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We have hiked in the Three Sisters Wilderness many times and have always enjoyed our experience. However, accessing views of Collier Glacier can be a bit of a challenge. Located in the saddle between North and Middle Sister, Collier Glacier views, on the north edge of Collier Cone, are obtained after a seven and a half mile hike from Lava Camp Lake Trailhead through Matthieu Lakes or the Obsidian Trailhead. While only 1/2 mile off the Pacific Crest Trail, to reach the edge of Collier Cone involves a scramble up a steep pumice hill, but once you arrive, the setting is spectacular with the glacial lake and towering vistas of North and Middle Sister and Little Brother. We hiked this trail 7-15-23 during one of the hottest days of the year. Although we started the hike early, it took almost 8 hours to complete it and much of the trail was exposed to the sun in lava fields or burned forest. However, there were beautiful shaded areas near Matthieu Lakes and our experience was wonderful. We brought a lot of water and enjoyed refilling a water container at Minnie Scott Spring where water can be seen percolating through the small stones. The total hike was over 15 miles and over 2500 feet of elevation gain.
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