Yanawayin is a lake in the central Peruvian Andes. It lies in the Lima Region, Huaral Province, Andamarca District, near the village of Yanawayin . The lake is situated at an altitude of about 4,900 metres .LandslideThe site made world headlines in 1971 when on March 18 a rock avalanche of fell from an outcrop of jointed limestone about above the lake. It created a wave of that destroyed the Chungar Mining Company (Cia Minera Chungar, S.A.) camp on the shore, destroyed all the mines' surface facilities, and killed 200–600 miners.