Lake Kvislavatn nyrdra, just 4 km Northwest of lake Ulfsvatn, has an area of 2,6 km². It is shallow and located at 429 m above sea level.
The Scree Mound Lake River enters it from the east and the discharge runs through lake Skjaldartjorn to one of the renowned salmon rivers in the west, Kjarra. This is a nice fishing lake with both lake char and brown trout.
The distance from the capital over the mountain pass Kaldidalur is about 200 km.