Lakes Havadavotn are located some distance north of lake Ulfsvatn. They have an area of 1,9 km², they are shallow and located at 455 m above sea level. Two rivers enter from the north and their discharge tributes to river Gilsbakkaa, which continues to lake Ulfsvatn.
These lakes abound in large and well tasting lake chars and brown trout, which can also be caught in the brooks entering and discharging the lakes. The shortest way to the lakes is from lake Ulfsvatn is considerable and has to be covered on foot. The distance from the capital over the mountain pass Kaldidalur is about 200 km.