The highest mountain of the Chiemgau Alps is located far in the southeast and offers no opportunity for a ski ascent when viewed from its northern neighbors. With steep rock faces and deep, forested gorges, the Sonntagshorn drops off to the north. However, when seen from the south, the meaning of its name becomes clear, which probably has nothing to do with the day of the week of the same name, but is supposed to refer to the sunlit summit ridge with "sunn’dach" (sun roof), which in winter often shines down into the Heutal in dazzling white.
The Heutal is also the starting point for our ski tour. Despite the somewhat elaborate approach, which circles the mountain halfway, many ski tourers find their way here between Munich and Salzburg. The Sonntagshorn is no longer a secret tip – those who want it a bit quieter will find numerous other, less well-known tour destinations in the snow-safe high valley. The ascent and descent usually lead through moderately steep, beautiful ski terrain that is only avalanche-prone in a few places under critical snow conditions.
With high snow levels, it is therefore a perfect pleasure tour that is best undertaken immediately after fresh snowfall if you are looking for untouched powder slopes. Otherwise, the usual descent routes quickly become piste-like, and in the south-facing summit slope, the sun can quickly spoil the snow quality. In snow-poor winters, the ski tour on the Sonntagshorn is one of the better tips in the Chiemgau – however, the last slopes above the Heutal farmers often thaw quickly, and sure-footed swinging past the open larches in the summit slope should be mastered. The latter can be avoided if you change your tour destination on short notice to the neighboring, shaded Peitingköpfl, which is significantly lower but usually offers better powder.
Ascent There are several ascent options to the Sonntagshorn – the route described here or the ascent via descent 2 are the two usual variants from the Heutalbauer. From the parking lot we first go along a service road first right, then left of the stream north into the side valley. At a hairpin bend, we keep straight ahead, then the road ends and you climb along the hiking trail on the left of the Lanersbachgraben. Then you cross an alpine road and reach the high alpine pasture over meadows and through short forest belts. Through the huts of the alpine village, we now pull up through a nice hollow to the beautiful south ridge of the Sonntagshorn. Over broken terrain we climb the moderately steep ridge, making use of the terrain, up to the highest point.Descent 1. Along the ascent route, where after half of the south slope you can also descend further right on a ridge to the high alpine pasture. There should be enough snow in the Lahnersbachgraben to make the descent along the summer
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