During the winter of 1938/39, a shaft was dug near the "Arbre du Ténéré", it turned out that the tree had reached the water table at a depth of 33 to 36 metres. In 1939, the officer Michel Lesourd, stationed in French West Africa, wrote about the solitary tree: "One must have seen the tree to believe its existence. What is its secret? How can it still remain undeserted, despite the multitude of dromedaries near it? How come no camel eats its leaves and buds? Why don't the many Tuareg salt caravans cut its branches and use them as firewood for making tea? The only answer is that this tree is taboo and so respected by caravans." - Ténéré - Niger - 1966
