This view of the west flank of Mount Rainier is toward the northeast. Sunset Amphitheater and Point Success (high point in upper right) both expose thick layers of lava and pyroclastic debris erupted by the volcano. The South Tahoma Glacier descends from the base of Point Success and Puyallup Glacier descends from Sunset Amphitheater. The white band cutting across the middle of the amphitheater is a layer of pumice about 35 m thick.

Sunset Amphitheater is the source for at least two large landslides in the past 3,000 years, including that which generated the Electron lahar about 500 years ago.