From Penser Joch (2214 m, "Alpenrosenhof" mountain restaurant, road crossing between Sterzing in the upper Valle Isarco (Eisacktal) and Pens in the Sarn valley), follow marking 12A throughout, starting off westward on a wide path to the small Penser Joch lake, from here uphill on a good and safe mountain track, then (with minor altitude variations) across steep, south-facing slopes in westerly direction to the Dolomite boulder area above the Steinwandsee, briefly up to the Gerölljoch, then right on to an exposed rocky path which is, however, mostly fitted with ropes (still following marling 12A) through the mountain's rocky, very steep southern flank straight up to the summit ridge, finally right to the nearby summit cross (2705 m, 2:30 hrs. from Penser Joch).
For the return to Penser Joch best to follow the described route (around 2 hrs.); however, a descent to Weissenbach is an option, but with very steep sections below the Gerölljoch.

Walkers must be sure-footed

Penser Joch

By bus from Bolzano to Sarnthein, then by hiking bus (twice weekly) to Penser Joch.

From Sterzing to the pass, or from Bolzano across the entire Sarn valley to Penser Joch; ample parking.