glacial striations on volcanic rock

August 31, 2013Tam McArthur Trail, Three Sisters WildernessDeschutes County, Oregon

Coordinates: 44.08937,-121.63731
glacial striations on volcanic rock [Tam McArthur Trail, Three Sisters Wilderness, Deschutes County, Oregon]
Filename: 20130831-094645.jpg 2736x3648 pixels, ISO 80, f4.0 @ 1/400 sec

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