Colombia is bordered to the east by Venezuela and Brazil; to the south by Ecuador and Peru; to the north by Panama and the Caribbean Sea, and to the west by Ecuador and the Pacific Ocean.
Part of the Pacific Ring of Fire, a region of the world subject to earthquakes and volcanic eruptions, Colombia is dominated by the Andes mountains. Beyond the Colombian Massif (in the south-western departments of Cauca and Nariño) these are divided into three branches known as cordilleras (from the Spanish for “rope”): the Cordillera Occidental, running adjacent to the Pacific coast and including the city of Cali; the Cordillera Central, running between the Cauca and Magdalena river valleys (to the west and east respectively) and including the cities of Medellín, Manizales, Pereira and Armenia, Quindío ; and the Cordillera Oriental, extending north east to the Guajira Peninsula and including Bogotá, Bucaramanga and Cúcuta. Peaks in the Cordillera Occidental exceed 13,000 ft (3,962 m), and in the Cordillera Central and Cordillera Oriental they reach 18,000 ft (5,486 m).[18] At 8,500 ft (2,591 m), Bogotá is the highest city of its size in the world.
