Ignimbrites and lavas about 2.65 million years old can be seen in region around the lake.

[1] The lake can be reached by a road that runs up the east side of the Callaqui volcano and the Ralco National Reserve.

It has a campsite with hot showers run by the local Pehuenche community, with craft sales, horse riding and MTB rentals.

[2] In 1997 Endesa proposed to increase exploitation of the tourist potential of the lake and the Río Quillaileo.

This Biobío Region location article is a stub.