Jungholz forms a pene-exclave of Austria that is connected to the rest of Austria by a single point, which is the summit of the mountain Sorgschrofen (). As well as housing border post number 110 on the normal international border between Tyrol and Bavaria, a second border starts and, having gone round Jungholz, ends there. There are thus borders extending in four directions from the summit, called a quadripoint. Two Austrian (Tyrolean, Reutte) and two German (Bavarian, Oberallgäu) municipalities meet at that point, starting with Jungholz and continuing clockwise: