From Preiner Gscheid, the well-marked trail first leads over a former ski slope to the impressive Siebenbrunnenkessel. High above, we can see the summit of Predigtstuhl, while to our right, the Waxriegelhaus comes into view.
However, we continue diagonally left uphill until we reach the clearly visible Karlgraben. From there, we turn right and ascend in several switchbacks via the wide and newly renovated (June 2019) Schlangenweg until we reach a steel chain.
At this point, do not follow the chain but keep to the right toward the so-called Törl. From here, it is just a few minutes left and uphill to reach the Karl Ludwig Haus.
The ascent to the 2,007 m high Heukuppe continues directly westward across the wide plateau (orientation can be difficult in fog!). It takes about 20–30 minutes to reach the Heukuppe from the Ludwig Haus. The path is technically easy and not particularly steep.
For the return route, we follow the same path down. After a break at Karl Ludwig Haus, we either descend along the chain (steep) or take the original ascent route back to the Waxriegelhaus. From there, it’s about a 30-minute descent to Preiner Gscheid.