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Trails: Sheep Rock Unit The colorful landscapes of John Day Fossil Beds National Monument’s three units represent 40 million years of Oregon history. Evidence of volcanic activity, environmental changes, and ancient pl
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Document Date: 2013-11-29 14:18:11
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Trails: Sheep Rock Unit The colorful landscapes of John Day Fossil Beds National Monument’s three units represent 40 million years of Oregon history. Evidence of volcanic activity, environmental changes, and ancient pl