CERRO BOLUDO. Cerro Boludo is two miles north of San Jacinto Mountain in east central Presidio County (at 29°48' N, 103°57' W). Its summit, at an elevation of 4,740 feet above sea level, rises 740 feet over Little San Jacinto Creek, which runs along its southern edge. Its name is Spanish for "round (or bald) hill." Cerro Boludo is a Tertiary intrusion surrounded by sedimentary deposits of sandstones and conglomerates in the Alamito Creek valley. The surrounding terrain of desert mountains and rugged canyonland is surfaced by loose rubble. Local vegetation consists primarily of sparse grasses, cacti, and desert shrubs of conifers and oaks.