2019 Map of Sombrero Peak

About this map

Big Bend National Park defines the southern half of this Brewster County landscape, where the Chihuahuan Desert meets the northern reaches of the park's protected boundary. The terrain is marked by significant hydrological markers essential for survival in this arid environment, including Indian Spring, Rock House Spring, and the central Onion Spring. These water sources are scattered among prominent elevations such as the Rosillos Mountains in the northeast and the distinctive Sombrero Peak to the north. A network of rural desert roads, such as Terlingua Ranch Rd and Marathon Rd, provides access across the northern plains. The drainage patterns of Tornillo Cr and East Corazones Draw reveal the erosional forces shaping the basin near Onion Flat, while the Paint Gap Hills rise sharply in the southeast, offering a clear view of the transition into the deeper canyons of the park.