Aerial view of Three Sisters Volcanoes, Oregon, view southward.

On the right side of this photo are the Three Sisters Volcanoes, three composite volcanoes in the central Oregon Cascades. North Sister has a deeply eroded northern face because it has been dormant the longest. In the far left background of the photo is Broken Top, a deeply eroded extinct volcano. In the middle background is Mt. Bachelor.

On to the next slide: Crater Lake Caldera, Oregon.
Back to the last slide: Aerial view of Mt. St. Helens and Mt. Rainier, Washington

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