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Ref : T00078
Theme :
Earth in Space - Partial (172 images)
Title : Ugab River
Caption :
Elusive, but ecologically vital, Namibia’s Ugab River only flows above ground for a few days each year. The subterranean waters underlying this ephemeral river, however, are shallow enough in places to fill hollows and sustain a wildlife population that includes the rare desert elephant.
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