Lake Yanahuin is situated in the central Peru

Peru

Peru , officially the Republic of Peru , is a country in western South America. It is bordered on the north by Ecuador and Colombia, on the east by Brazil, on the southeast by Bolivia, on the south by Chile, and on the west by the Pacific Ocean....

vian Andes

Andes

The Andes is the world's longest continental mountain range. It is a continual range of highlands along the western coast of South America. This range is about long, about to wide , and of an average height of about .Along its length, the Andes is split into several ranges, which are separated...

 in the Pasco Region

Pasco Region

Pasco is a region in central Peru. Its capital is Cerro de Pasco.-Political division:The region is divided into 3 provinces , which are composed of 28 districts .-Provinces:...

 at an altitude of ca. 4,900 m.

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

Limestone

Limestone is a sedimentary rock composed largely of the minerals calcite and aragonite, which are different crystal forms of calcium carbonate . Many limestones are composed from skeletal fragments of marine organisms such as coral or foraminifera....

 ca. 400 m above the lake, causing a wave of 30 m that destroyed the mining camp of Chungar

Chungar

Chungar may refer to:*Chungar Lake or Chungará Lake, a lake in the Lauca National Park, Chile*Chungar , the camp of a mining company in Peru which was destroyed by a landslide into Lake Yanahuni...

on the shore and killed 200-600 miners.