At the head of the Tilliacher valley in East Tyrol, Lake Klapfsee is located at 1,680 m asl.
In the Tilliacher valley, accessible from Obertilliach, a gravelled road proceeds until the head of the valley. This valley is also known as Dorfer valley, not to be confused with the Dorfer valley in the High Tauern National Park. At the gate at the head of the Tilliacher valley, the road ends and the alpine world begins. And exactly there, at 1,680 m asl, a natural treasure is located: Lake Klapfsee.
The lake is both, resting spot and excursion destination for fishermen. The fishing rights has the family who runs the Unterwöger Hotel. The lake is also starting point for gorgeous hikes.
One of the hiking tours proceeds to the Porzehütte mountain hut. The Porze itself, a 2,589 m high mountain in the Carnic Alps, is visible from the lake. The walking tour lasts about one hour up to the hut at 1,942 m asl. Those who want to extend their hike, can walk further up to the Bärenbadeck (2,430 m asl) or try an easy via ferrata which proceeds to Mt Porze (2,589 m asl).