Mountain Beltway by
Callan Bentley is licensed under a
Creative Commons Attribution-Noncommercial- Share Alike 3.0 United States License. That means you can use the stuff you find here, repost it with attribution to the author, and "remix" it for your own purposes, but not with the aim of making money off of it.
Educators especially: I encourage you to use anything you find here that is useful to your mission educating people about Earth science.
E-mail me if it would help to have a larger or higher-resolution version of any of the images.
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