September 6, 2010
Sand dune shifting is in fact an optical illusion created by the topmost layer of sand blowing in the wind and collecting at a farther point. A big sand dune behind my home shifted in this manner, roughly over a period of 3 months.
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You are a lucky man indeed to have something like that behind your home to watch for three months.
What can you find to do next that will anywhere near as enjoyable than that?