In his book , French ethnologist and explorer Henri Lhote described his two journeys to the Tree of Ténéré. His first visit was in 1934 on the occasion of the first automobile crossing between Djanet and Agadez. He describes the tree as "an Acacia with a degenerative trunk, sick or ill in aspect. Nevertheless, the tree has nice green leaves, and some yellow flowers". He visited it again 25 years later, on 26 November 1959 with the Berliet-Ténéré mission, but found that it had been badly damaged after a vehicle had collided with it: