Todos los Santos Lake

It is located 68 kilometers from Puerto Varas. It is surrounded by andean hills and has small tourist centers in Petrohué and Peulla. Here there is hotel and camping equipment with facilities for water sports.

It is possible that before the Pleistocene glaciers, the present Todos los Santos Lake was only a river bed, which widened and deepened due to the erosive effect of the glaciers. The glaciers which descended along the Derrumbe Hill and Santo Domingo Mountain Range flow into the main body of the great glacier which was located in the place where the lake is nowadays.

The creation of the present lake did not only depend on the fact that the glaciers went back towards the Andean summits, but also very much on the history of the Osorno volcano, which with the lava and slag closed its bed. During the first interglacial ages, the basins of the Todos los Santos and Llanquihue Lakes formed only one unit, which flowed towards the West. The primitive Osorno volcano could have erupted before the last glaciations, making the ice go off course towards the south side, occupying the Llanquihue Lake bed; the ice of the glacier of the Llanquihue Lake made the waters which came from Sierra Santo Domingo go down towards the Reloncaví Estuary, together with the waters from the Petrohué River. The eruptions of the Osorno volcano in the post-

glacial era, together with the eruptions of the Calbuco Volcano, separated both beds, originating the Todos los Santos Lake. Nowadays, the glaciers are present in the high summits of the Puntiagudo, Osorno and Tronador volcanoes.

-The small andean lakes of Chapo and Tagua Tagua are also part of the Province of Llanquihue.