ColombiaColombia, officially the Republic of Colombia is a transcontinental country largely situated in the northwest of South America, with territories in Central America (included in some definitions of North America).Bogotais the capital of Colombia.Medellin, officially the Municipality of Medellín, is the second-largest city in Colombia and the capital of the department of Antioquia.Santiago de Cali, usually known by its short name "Cali", is the capital of the Valle del Cauca department.The Japurá River or Caquetá Riveris a river about 2,820 kilometres (1,750 mi) long rising as the Caquetá River in the Andes in southwest Colombia. It flows southeast into Brazil, where it is called the Japurá. The Japurá enters the Amazon River through a network of channels. It is navigable by small boats in Brazil.The Orinocois one of the longest rivers in South America at 2,140 kilometres (1,330 mi). Its drainage basin, sometimes called the Orinoquia, covers 880,000 square kilometres (340,000 sq mi), with 76.3 percent of it in Venezuela and the remainder in Colombia.Pico Cristóbal Colónis the highest mountain in Colombia, with an estimated height of 5,700 metres (18,700 ft). It is also the fifth most prominent in the world. Pico Cristóbal Colón andPico Simón Bolívarare the two highest peaks in Colombia and are very nearly equal in elevation.