Mount Hood is Oregon’s highest mountain, at 11,249 feet, and one of three active volcanoes around the Columbia Gorge; Mount St. Helens last erupted in 1980, Mount Hood in the 1790’s, and Mount Adams around 1000. These mountains are part of the Cascade Volcanic Arc, stretching from British Columbia to Northern California. This arc also forms a demarcation between the Pacific Ocean-facing wester side with its lush rainforests, and the arid eastern side, shown here, with less than 20-inches of annual rainfall.
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