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PEÑA BLANCA HILLS. The Peña Blanca Hills, also known as the Lightning Hills, are four miles west of Haymond and nine miles southeast of Marathon in Brewster County (centered at 30°09' N, 103°07' W). The highest peak in the hills is 4,485 feet above sea level, rising some 405 feet above U.S. Highway 90, four miles north. Soils in the area are shallow and stony and support scrub brush, creosote bush, cacti, mesquite, grasses, and oaks.

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The following, adapted from the Chicago Manual of Style, 15th edition, is the preferred citation for this article.

Handbook of Texas Online, "Pena Blanca Hills," accessed October 22, 2017,

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