When in 2000, the palaeontologist Paul Sereno went to look for new dinosaur bones in the Sahara Desert, he did not expect that he would return from there as an archaeologist. Arriving in the northeast of Niger, Sereno and his colleague’s day after day sifted through the sand of Tener, one of the most inhospitable deserts in the world, which even the nomadic inhabitants of the Sahara call “desert in the desert”.
