Image: Ventifact 1871 USGS
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Original image (1,400 × 984 pixels, file size: 1.04 MB, MIME type: image/jpeg)
Description: Rock carved by drifting sand below Fortification Rock in Arizona.
Title: Ventifact 1871 USGS
Credit: U.S. Geographical Surveys West of the One Hundredth Meridian (Wheeler Survey, 1871 Expedition)
Author: Timothy H. O'Sullivan
Permission: Original work of the United States Geological Survey
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
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