The site made world headlines in 1971 when on March 18 a rock avalanche of 100,000 cubic metres (3,500,000 cu ft)[5] fell from an outcrop of jointed limestone about 400 metres (1,300 ft) above the lake. It created a wave of 30 metres (98 ft) 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,[5] and killed 200–600 miners.[3][5][6]
^escale.minedu.gob.pe - UGEL map of the Huaral Province (Lima Region) showing the lake (unnamed) near the village of Yanawayin (Yanahuain) and near the destroyed village of Chungar