Bill Parker at the Petrified Forest has an interesting set of repeat photos fron the Park. As you can see there has not been much change in the rocks since the 1920's. Erosion is slow in the high desert.
Chinleana: Repeat Photography - Charles Camp and Annie Alexander - 1921
Harry Allen
Monday, July 27, 2009
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Other useful photographs of the Park by Darton, Gregory, and others can be downloaded free from the USGS Photo Library web site.
Garry Rogers
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