National park, western Texas, U.S. Established in 1972, it occupies an area of 86,416 acres (34,998 hectares) east of El Paso. It is centred on two peaks: Guadalupe Peak, which reaches 8,751 ft (2,667 m), and El Capitan, which rises to 8,078 ft (2,462 m). The park is an area of great geologic interest, with a major Permian limestone fossil reef.
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The park also contains McKittrick Canyon. During the Fall, McKittrick comes alive with a blaze of color from the turning Bigtooth Maples, in stark contrast with the surrounding Chihuahuan desert. A trail in the canyon leads to the cabin of Wallace Pratt, a petroleum geologist who donated the land in order to establish the park.
For details on the area's geology, see Delaware Basin.