Twin Peaks rise above a landscape defined by expansive desert draws and isolated mountain ranges in this Brewster County corridor. The terrain is characterized by broad drainage systems like Nine Point Draw, Chalk Draw, and the West Corazones Draw, which carve through the high desert floor. Human presence is sparse, centered on established pastoral outposts such as Henderson Ranch and Buttrill Ranch, connected by long stretches of gravel and dirt roads including Marathon Rd and Sombrero Peak Ranch Rd.
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1903 · Chisos Mountains
USGS Topo · 1:125,000
1905 · Chisos Mountains
USGS Topo · 1:125,000
1917 · Bone Spring
USGS Topo · 1:62,500
1918 · Bone Spring
USGS Topo · 1:125,000
1918 · Bone Spring
USGS Topo · 1:62,500
1918 · Nine Point Mesa
USGS Topo · 1:62,500
1920 · Bone Spring
USGS Topo · 1:62,500
1937 · Nine Point Mesa
USGS Topo · 1:62,500
1959 · Emory Peak
USGS Topo · 1:250,000
1965 · Emory Peak
USGS Topo · 1:250,000