Kahler Asten, Mountain summit in Hochsauerlandkreis, Germany.
Kahler Asten is a 841.9-meter summit with an observation tower and weather station at the peak. From the top, visitors can see across the rolling hills and forests of the Sauerland region.
The Astenturm observation tower was built in 1884 and was the first permanent structure on this mountain peak. This early development makes the site an important landmark in the tourism history of North Rhine-Westphalia.
Locals and visitors regard the summit as a special place where the expansive Sauerland landscape comes into view. The name 'roof of Westphalia' reflects how deeply this peak resonates with regional identity.
Multiple hiking routes lead to the summit from nearby villages, each offering different difficulty levels and walking times. The mountain is fully accessible on foot with clear pathways throughout the year.
The summit sits on the watershed dividing the Rhine and Weser rivers, with the Lenne river sourcing here. This spring is the highest river source in northwest Germany.
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