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Hayden Expedition – Avalanche Peak

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On this day 150 Years ago! (August 19, 1871)
The Hayden Expedition is mapping and exploring the area from their base at Camp Hovey on the eastern shore of Yellowstone Lake. (In Burning Ground, a smaller group treks to the summit of Avalanche Peak, a few miles west of Sylvan Pass at today’s East Entrance).
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