Yanacocha is a lake in the Cordillera Blanca in the Andes of Peru located in Chacas District, Asunción Province, Ancash Region. It is situated at a height of about 4,250 metres (13,944 ft), about 470 m long and 161 m at its widest point. Yanacocha lies north-west of the mountain Perlilla, north-east of the mountain Pomabamba, south-west of the lakes Huegroncocha and Runtococha and north-east of the lakes Lauricocha and Paqarisha.