Volcanic ash from the eruption of Mt. Mazama 7,700 years ago, exposed in a roadcut along the North Umpqua Highway (U.S. 138), Oregon, USA
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Volcanic ash from the eruption of Mt. Mazama 7,700 years ago, exposed in a roadcut along the North Umpqua Highway (U.S. 138), Oregon, USA

Filename: 532128.TIF
Photographer: Robert & Jean Pollock
Source: Visuals Unlimited, Inc.
Date: 28 Oct 2006
Location:
Credit: Robert & Jean Pollock/Visuals Unlimited, Inc.
Copyright:
Model Release: No
Property Release: No
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