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Sierra Morena(syā`rä mōrā`nä), mountain range, SW Spain, extending c.375 mi (600 km) eastward along the southern edge of the Meseta (central plateau) from the Portuguese border to the Sierra de Alcaraz. Its highest peak is Bañuelo (c.4,340 ft/1,320 m). Partly forested with oak and chestnut trees, the range is also rich in a great variety of minerals, including copper, lead, and coal. The Sierra Morena is crossed by highways and railroads built to take the minerals out of the region. The Despeñaperros Pass is the main route through the mountains, linking Castile and Andalusia.
mountains in southern Spain that form the southern edge of the Meseta Plateau. The range is about 400 km long and rises to a maximum elevation of 1,299 m. The mountains, composed mainly of crystalline rock, have plateau-like watersheds. The southern slopes drop sharply to the valley of the Guadalquivir River and are dissected by its tributaries. There are evergreen shrubs and broad-leaved forests of oak, beech, and chestnut. The range has deposits of copper pyrites in Minas de Ríotinto and Tarsis and of lead and zinc ores in La Carolina and Linares.