Lago Rupanco — Chilean Lake District

The lake south of Puyehue that almost nobody stops for, with wild shorelines, thermal springs of its own, and a silence that Llanquihue lost years ago.

I found Lago Rupanco almost by accident, taking a wrong turn off the road between Puyehue and Osorno that turned out to be the right turn entirely. Where Llanquihue and Villarrica have built up shorelines dense with cabins and jet ski rentals, Rupanco remains mostly wild — steep, forested mountains dropping straight into the water on its southern side, a scatter of estancias and a couple of remote lodges on the northern shore, and long stretches where the only sound is wind moving through native forest and the occasional distant outboard motor.

I stayed near the small settlement on the northern shore, in a wooden cabin with a jetty that put me directly on the water. In the early morning, before any wind picked up, the lake went completely still, and Volcán Osorno appeared reflected in it from an angle I hadn’t seen from anywhere else in the region — closer, somehow, and less crowded by other people trying to photograph the same thing. I sat on that jetty with coffee for longer than I planned to, watching a kingfisher work the shallows.

Volcán Osorno reflected in the still, early-morning waters of Lago Rupanco

There are hot springs here too — Termas de Rupanco, more rustic and far less visited than Puyehue’s, tucked into forest on the lake’s southern flank and reachable mainly by boat or a rough forestry road. I took the boat, arranged through the lodge, across water so clear I could see the lake bed disappearing into darker blue well before we reached deep water. The pools themselves are simple, stone-lined, steaming into the cold air, with nobody else there but the two guides who’d brought me and a dog that had apparently adopted the place.

A small wooden boat crossing Lago Rupanco toward the forested southern shore where the hot springs sit

When to go: December through March for calm water and access to the southern hot springs by boat. Book a lodge stay in advance — there is very little drop-in infrastructure, which is exactly the point.