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MULE EAR PEAKS. The Mule Ear Peaks are in the Chisos Mountains seven miles northeast of Castolon and eighteen miles southwest of Panther Junction within Big Bend National Park in southern Brewster County (at 29°09' N, 103°24' W). The peaks, at an elevation of 3,881 feet above sea level, rise some 1,040 feet above Smoky Creek, just to the east. Soils in the area are shallow and stony and support live oak, piñon pine, juniper, and grasses. The twin peaks are part of a dike-like intrusion of relatively young rhyolite. They were named for their distinctive appearance.

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Handbook of Texas Online, "Mule Ear Peaks," accessed August 22, 2017,

Uploaded on June 15, 2010. Published by the Texas State Historical Association.