Their territory is generally plane, with serranías of short elevation, divided in two areas: the immediate one to the river conchos and the oriental integrated by the Bolsón del Mapimí and the plains of the Gigantes and Cristianos mountains whose alone very dry lands have rickety vegetation. Santa Rosalía serranía is the main one and in the oriental portion other isolated ones exist to each other, denominated Aguachiles, the Berrendo, Mesteñosas, Almagre, Alamos and other more.