Yanawayin Lake

Yanawayin (Quechua yana black, Ancash Quechua wayi house, "black house", -n a suffix, other spellings Yanahuain, Yanahuin, Yanahuni, Yanahuani) is a lake in the central Peruvian Andes. It lies in the Lima Region, Huaral Province, Andamarca District, near the village of Yanawayin (Yanahuain). The lake is situated at an altitude of about 4,370 m.

Landslide
The site made world headlines in 1971 when on March 18 a rock avalanche of 100,000 m3 fell from an outcrop of jointed limestone about 400 m above the lake. It created a wave of 30 m that destroyed the Chungar Mine camp on the shore, owned by the Mining Company (Cia Minera Chungar, S.A.), destroyed all the mines' surface facilities, and killed 200–600 miners.