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Tafoni, small cavity features that develop in granular rocks with smooth concave walls, at Twyfelfontein |
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 Twyfelfontain $ Around
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| Home / Twyfelfontain $ Around / nam_0917 |
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Tafoni, small cavity features that develop in granular rocks with smooth concave walls, at Twyfelfontein |
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Twyfelfontain $ Around
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