Cascada Chachín, Waterfall in Lácar Department, Argentina

Cascada Chachín is a waterfall in Lanín National Park that plunges 30 meters down a rocky cliff face. The water crashes over natural stone formations surrounded by dense Valdivian Forest.

The sources record no geological dating or formation history for the falls. What is documented is the human geography: the 30-metre drop on the Chachín River lies within Lanín National Park, 60 km from San Martín de los Andes, and the site is reached by a tourist circuit running from the Hua-Hum river mouth past Lake Nonthué and the Chachín river to Lake Queñi, entered from Provincial Route 48.

The name Chachín comes from the river that feeds the falls, which drops about 30 metres into dense Valdivian forest. The tourist route linking the Hua-Hum river mouth, Lake Nonthué, the Chachín river and Lake Queñi passes the falls, and a short footpath with interpretive signs branches off toward the water.

Access is via Provincial Route 48, where the tourist route starts at the mouth of the Hua-Hum river and follows Lake Nonthué and the Chachín river to Lake Queñi. A short signed footpath branches off the road up to the falls. A small pier on Lake Nonthué, about 2,000 metres from the waterfall, gives boat access.

A wooden observation platform lets visitors view the falls from several angles safely and comfortably. The platform helps protect the surrounding forest from foot traffic damage.