2016 Map of Twin Peaks

About this map

Big Bend National Park defines the eastern portion of this high desert terrain in Brewster County. The landscape is characterized by prominent elevations and deep drainage systems, dominated by the Rosillos Mountains and the distinctive Twin Peaks. Historical movement through this arid environment is centered on reliable water sources like Buttrill Spring, Goat Spring, and Alamo Spring, which provided essential stops in an area marked by dramatic relief such as Rag Canyon and the Chalk Mountains. Regional access is anchored by Marathon Rd and Terlingua Ranch Rd, while more specialized routes like Iwo Jima Pass and Doce Doe Path navigate the local canyons and draws. This document offers a precise look at the landforms and ephemeral hydrology within the park's reach.