Sumidero Canyon

Sumidero Canyon is set within a national park of the same name in Mexico's southern Chiapas state. It's home to endangered species such as river crocodiles, spider monkeys and ocelots. Fed by the Grijalva River, a reservoir formed by the Chicoasén Dam fills the canyon. Boat trips through the canyon embark from the colonial town of Chiapa de Corzo. Viewpoints (miradores) dot the top of the canyon's towering walls.