#34 A man stands behind the “Pulpit Terrace” formation at the Mammoth Hot Springs in Yellowstone, 1904.

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#34 A man stands behind the “Pulpit Terrace” formation at the Mammoth Hot Springs in Yellowstone, 1904.

Rare Historical Photos of America’s National Parks From 1870-1920

#34 A man stands behind the “Pulpit Terrace” formation at the Mammoth Hot Springs in Yellowstone, 1904.

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