Most visitors hike to Höllentalklamm gorge from the Hammersbach hamlet in Grainau, close to Garmisch-Partenkirchen. This is the fastest and most direct route (1 hour to the gorge entrance).
However, a far more dazzling approach begins at the Kreuzeck cable car mountain station.
This moderate circuit hike is mostly downhill, which is a perfect option for hot summer days and acclimatization. …
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Knowing the tunnels would be wet and crowded, I opted to go late in the day. And hiked only the gorge. In both directions.
Also, literally cool. Air conditioning and water spray on a hot day.
I was happy to have brought a light rain jacket.
On the down side, it was very dark in the gorge by the time I got there.