Can also be caused by wind
Running water doesnt actually wear down rocks itself, it is the small particles of sand that do it (if I remember correctly)
(
Cocodaye Miasere likes chips and peas, Sun 12 Aug 2012, 17:02,
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We'll have none of your science here thank you very much.
(
azgiles, Sun 12 Aug 2012, 20:44,
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