Qiwllaqucha (Quechua qillwa, qiwlla, qiwiña gull, qucha lake, "gull lake", hispanicized spelling Quiullacocha) is a small lake in Peru located in the Huánuco Region, Dos de Mayo Province, MarÃÂas District. It is situated at a height of about , about 0.47 km long and 0.2 km at its widest point.