File:Granite Wash Mountains 2005.jpg

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• 2011-01-19 22:30 Meiguoren 1632×1232× (773943 bytes) {{Information |Description = Granite Wash Mountain perches an hour and a half west of Phoenix, and is a field geologist's dream location for studying the history of Earth and, by analogy, of Mars. Within a 10-foot stretch of dazzling dirt, Granite Wash reveals the same 400-million-year history of rock layering found in the Grand Canyon. It also happens to be home to the largest cacti population in the United States. |Source = http://www.nasa.gov/vision/universe/solarsystem/mer-03302005_prt.htm |Date = 3/30/2005 |Author = NASA |Permission = Public Domain |other_versions = }}