Lake Malniu is a natural lake of glacial origin located in the west of Cerdanya at 2250 m above sea level, at the head of the Tova valley. It has an area of u200bu200b5.9 ha and a maximum depth of 13.5 m. Its basin of 190 ha is limited to the northwest by Puigpedrós (2914 m) and to the northeast by Pedró de la Tossa (2695 m).