HuarazPalcacocha lake burst in 1941 and killed thousands.
Nepal’s glacier collapse killed more than 1,300 people, with thousands still missing as of 11 September.
Meltwater fills lakes held back by ice or moraine, and an earthquake, avalanche or excess water bursts them.
Studies rank the Andes third-highest risk worldwide, said Paola Moschella of Peru’s glacier research institute.
Sources: Dialogue Earth