Cerrejón is a field or coal mine, located in the basin of the Ranchería River, southeast of La Guajira Department in Colombia, east of the Sierra Nevada de Santa Marta and west of the Perijá Mountains, in line with the border with Venezuela. It is an open-pit mine, and is one of the largest mines of that type. The coal mine was divided into three main corresponding areas Cerrejón North Zone, Cerrejón Central Zone and Cerrejón South Zone.