L'Arbre du Ténéré, known in English as the Tree of Ténéré, was a solitary acacia, of either Acacia raddiana or Acacia tortilis, that was once considered the most isolated tree on Earth—the only one for over 400 kilometres (250 mi). It was a landmark on caravan routes through the Ténéré region of the Sahara in northeast Niger, so well known that it and the Arbre Perdu or 'Lost Tree' to the north are the only trees to be shown on a map at a scale of 1:4,000,000. The Tree of Ténéré was located near a 40-metre (131 feet)-deep well. It was knocked down by a drunk truck driver in 1973.

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