Radiocarbon dates eolian silts and sands banked up against range flanks of Big Dune at 4,100 years. Big Dune, of Amargosa Valley, Nevada, has no potential for locatable minerals. Prior to 2006, there were 23 mining claims at Big Dune. All of these were removed after it was determined there was no potential for locatable minerals. No mining claims can be filed at Big Dune until the year 2029, because 1,920 acres of land have been closed to mining under Secretarial Order 7737.
focal length: 4.7mm | exposure: f/2.2 – 1/669 – ISO 100
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