Malleco River
The Malleco River is a river in Malleco Province, La [Araucanía Region], central Chile. It rises in the western slopes of the Andes, within the Tolhuaca [National Park] and near Tolhuaca Volcano. After passing by Tolhuaca, it drops into a 50 meter waterfall before continuing towards the Pacific. The river is a major tributary to the Vergara River, which is a tributary of the Biobío River. The Malleco Viaduct, built in 1890 and at the time the highest railroad bridge in the world, is the main landmark of the river and a candidate as a UNESCO World Heritage Site.