The 2011 Puyehue Volcano eruption polluted the Golgol River , a source of the lake , killing fish . Pyroclastic material reached Puyehue Lake through river transport , which resulted in the deposition of a layer of volcanic ash at the bottom of the lake
2011 Puyehue Volcano eruption
2011 Puyehue-Cordón Caulle eruption
Puyehue Lake