The western mountain range, the Cordillera Occidental, is a moderately high range with peaks reaching up to about 13,000 ft (4,000m). Several snow-clad volcanoes in the Cordillera Central have summits that rise above 18,000 ft (5,500 m). The peaks of the Cordillera Oriental are moderately high. This range differs from Colombia's other mountain ranges in that it contains several large basins.
Sierra Nevada de Santa Marta is an isolated mountain range and is not part of the Andes chain.