Hinteres Sonnwendjoch, Mountain summit in Thiersee, Austria
Hinteres Sonnwendjoch is the highest summit of the Mangfall range within the Bavarian Prealps, standing at 1,986 meters. The mountain features dolomite rock on its main face with plattenkalk formations on the southern slopes, and drops steeply on the northern side.
The mountain formed during the Upper Carnian-Norian period with deposits of dolomite rock that still define its structure today. These ancient geological processes shaped the composition visible on the slopes.
Local hikers maintain strong traditions connecting Austrian and Bavarian mountain communities through regular ascents via established routes to the summit.
The main hiking route starts from Ackernalm at 1,383 meters and follows a trail of about 11 kilometers to reach the summit. The trailhead is accessed via a toll road from either Bayrischzell or Kufstein.
From the summit, multiple distant mountain ranges come into clear view including the Kaiser Mountains, Zillertaler Alps, and High Tauern. This wide vista makes it a favorite spot for hikers seeking expansive panoramic views across the Alps.
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