The photographs that make up the corpus of the book come from years of individual and shared works by photographers Ahumada-Maawad, and now in this edition they see the light together , which makes it a substantial importance for its presence in the editorial and photographic space. This is because they are unusual images, little known, and of great significance for the history of the Mezquital Valley region, and even more for our national history. The texts of Carlos Martínez Assad and Fernando López Aguilar describe how they have worked from different literary, photographic and anthropological-historical sources, the place and its entrails, and show the possibilities that its inhabitants have had, from a historical recovery from ancient times to the little government interest that has failed to fully provide the minimum adequate irrigation to the region. By walking this path, the researchers allow reading the photographs, recovering the visibility of that desert area and its characters that have a rugged and intense source of life in their daily survival tasks.