Paso Huahum is an international mountain pass at an elevation of 625m (2,051ft) above the sea level, located in the Andes, on the border between Chile and Argentina. It’s one of the lowest passes of the southern Andes.
The pass, also known as Paso Pirihueico, links San Martín de los Andes (Argentina) and Panguipulli (Chile). To reach the summit, on the Chilean side, the road is called Ruta CH-203 and on the Argentinian side is Ruta Provincial 48. Both roads are gravel. Unpaved; rocky and steep on Chilean side; partially graded on Argentine side. This is a maintained road where a high clearance 2WD vehicle is able to travel safely at low speeds on long dry straight-of-ways, without losing control due to wash boarding, ruts, or dips. To get to or from the pass on the Chilean side, you have to take a ferry across Lake Pirihueico. The Hua Hum ferry runs every day between Puerto Fuy and Puerto Pirihueico and takes 1½ hours. It is the main pass of the Chilean Los Ríos Region to Neuquén Province in Argentina. The pass never closes due to snow fall and is open year-round.
Pic: Nicolás Vallejos Roja