Sierra Negra (also, and perhaps more properly, Cerro La Negra) is an extinct volcanic companion peak of Mexico's highest mountain, the Pico de Orizaba (Citlaltepetl). At up to 4,640 m (15,220 ft) above sea level (depending on which source one consults) it is one of Mexico's highest peaks, perhaps even the fourth highest, though it is usually listed fifth.