Petrohue Falls in Vicente Pérez Rosales National Park
The Petrohue Waterfalls are inside Vicente Pérez Rosales National Park, in the Los Lagos Region. It is the oldest national park in Chile: it was created in 1926 and is run by CONAF, the national forest service. The park borders Nahuel Huapi National Park in Argentina, and together they form one of the largest protected wild areas in South America. The falls are its most visited spot, right beside the road from Ensenada to Petrohué.
Cascades over lava from Osorno Volcano
The Petrohue River rises from Lake Todos los Santos and, soon after, drops in a series of falls over basalt lava from Osorno Volcano. The black rock squeezes the river and creates the falls. The water is green and blue most of the year and turns cloudy with the snowmelt. From the walkways, Osorno Volcano stands in the background.
Why this stretch of the river isn't navigable
Commercial trips on the upper Petrohue are prohibited because of the falls, which cannot be navigated. That is why river activities do not take place here: they start further down, on the lower Petrohue, with 8 km of class III rapids.

