ナショナルジオグラフィックのインスタグラム(natgeo) - 1月24日 18時16分

Image by @beverlyjoubert. A lone bull elephant crosses an Okavango channel. The bulls are used to heading off on their own and may travel vast distances, only joining up with the matriarchal herds on occasion. Their wandering is essential for areas like the Okavango Delta. With the water levels rising and falling through the year, silt will build up and reeds can take hold, forming an impenetrable wall for many animals. Elephants may have used certain routes for years and together with another giant herbivore - the hippos, they create numerous paths through the vegetation. Repeated use of these paths maintains them across seasons and access to other areas is created for all sorts of animals - from lechwe to lions. #okavango #elephants #ecosystemdrivers

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