"The Guadalupe Mountains are a mountain range located in western Texas and southeastern New Mexico. The range includes the highest summit in Texas, Guadalupe Peak, 8,749 ft, and the "signature peak" of West Texas, El Capitan, both located within Guadalupe Mountains National Park, as well as Carlsbad Caverns National Park.
"The range lies southeast of the Sacramento Mountains and east of the Brokeoff Mountains. It extends north-northwest and northeast from Guadalupe Peak in Texas into New Mexico. The northeastern extension ends about 10 miles southwest of Carlsbad, near White's City and Carlsbad Caverns National Park. The northwestern extension, bounded by a dramatic escarpment known as "The Rim", extends much further into New Mexico, to near the Sacramento Mountains. The range is bounded on the north by Four Mile Canyon; on the east by the valley of the Pecos River; and on the west by Piñon Creek, Big Dog Canyon, Valley Canyon, Middle Dog Canyon and West Dog Canyon."