Overlooking El Beyedh is the Desert Museum, where Yslim, its guardian, has devoted his life to preserving traces of ancient civilizations. His small hut, built from dry branches, is relentlessly swept by the desert wind, sand creeping into every corner. At the tiny wooden door, Yslim, an elegant elderly man in a pale blue tunic, welcomes visitors into a space that seems, at first glance, no more than a modest storage shed. Inside, our eyes slowly adjust to the dim light, revealing a remarkable scene: thousands of prehistoric artifacts carefully arranged on the floor and along the walls. Enormous hand axes, arrow and spear points, mortars, and grinding stones, many dating back to the Neolithic, testify to human ingenuity across millennia. Each piece has been meticulously collected and cataloged by Yslim, a lifetime devoted to rescuing these treasures from the sands. As a boy, he once accompanied an elderly traveler, Théodore Monod, one of the greatest Saharan scholars and explorers of the twentieth century. Monod wandered across Mauritania in search of a legendary meteorite, and during those days, Yslim showed him the unusual stones emerging from the sands around El Beyedh. “The professor told me to start collecting and preserving them,” Yslim recalls, “and that one day people from far away would come to study and see them.” Today, Monod is long gone, but Yslim continues the work he was entrusted with, preserving history in a humble desert hut, keeping the past alive amidst the whispering sands.