Cauca is a Department of Colombia. Located in the south-western part of the country, facing the Pacific Ocean to the west, the Valle del Cauca Department to the north, Tolima Department to the northeast, Huila Department to the east and the Nariño Department to the south, Putumayo and Caqueta Departments are located and bordering the southeast portion of Cauca Department as well. covering a total area of 29,308 km², the 13th largest in Colombia.
Its capital is the city of Popayán. The offshore island of Malpelo belongs to the department. It is located in the southwest of the country near the Andean (between 00°58'54"N and 03°19'04"N latitude, 75°47'36"W and 77°57'05"W longitude). The area includes 2.56% of the country. Cauca is considered the 'epicentre' of the Colombian armed conflict as of 2011.