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[[image: top left]] [[photo of mountain]] 1980. Lava flows, McKenzie Pass, Oregon. [[image: top right]] [[photo of mountain]] 1981. The two north sisters (Three sisters), Cascade Forest. Lava in foreground. [[image: bottom left]] [[photo of forest]] 1982. Lava flow in forest. Cascade Forest. [[image: bottom right]] [[photo of rocks]] 1983. Lava at McKenzie Pass. July, 1927.