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Basalt of Soda Peaks and andesite of West Crater, southern Washington

By Cascades Volcano Observatory June 2025 (approx.)
Barren talus in foreground, forested area in background with barren area in the middle, in a cloudy landscape
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Detailed Description

Talus slopes of the basalt of Soda Peaks (foreground), the oldest known eruption in the West Crater area, overlooking the andesite of West Crater (middle background), the youngest known eruption. This area is heavily vegetated and steeply sloped, which provide a challenge for rock sampling. Photo by James Genero, CVO summer intern, June 2025.

Sources/Usage

Public Domain.

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