A lucky photographer catches a rare sighting of the largest elephant herd in the world as they drink and bathe by a river. The reclusive 650-strong herd appeared from the bushes in Zakouma National Park, Chad, just long enough for Nina Waffenschmidt, 33, to take a series of photographs.

The elephants stay clear of humans visiting the 1,158-square-mile park, because they have been relentlessly hunted by poachers in the past, but Ms Waffenschmidt watched as the animals played and...
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