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Wednesday, Feb 8, 2012 - 3:00 PM    "Monumental Dunes" The accumulation of wind-blown sand into a dune marks the beginning of one of Nature's most interesting and beautiful phenomena. In addition to the remarkable structure and patterns of sand dunes, they also provide habitats for a variety of wildlife. The arid regions of the southwestern United States contain a vast variety of dune systeMs. Visit three groups of sand dunes located on public land in the United States. D
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