Somoto Canyon National Monument (Spanish: Monumento Nacional Cañón de Somoto) is a canyon located in the Madriz Department of Nicaragua. The Somoto Canyon National Monument protected area covers an area of approximately 170 hectares (420 acres), of which 125 hectares (310 acres) are in the actual zone of the canyon. The confluence of the Tapacalí and Comali Rivers at the head of the canyon form the Coco River, which flows through the canyon and onward 750 kilometres (470 mi) to the Caribbean Sea.