Pacific

The Pacific region is bordered by the Pacific Ocean to the west and the West Andes to the east. To the north is the Darién Gap and the Serranía del Darién at the border with Panamá. The area is mostly flat and covered by dense rainforest, rivers, swamps, and mangroves. The Baudó Mountains are a small, isolated range in this area along the coast. Gorgona Island is located off the southwest coast.

Politically, the region is within the following Colombian departments: Chocó, Valle del Cauca, Cauca and Nariño.