Reissend Nollen, Mountain summit in Urner Alps, Switzerland

Reissend Nollen is a 3,003 m peak of the Urner Alps on the border of Obwalden and Bern, east of the Wendenstöcke and west of the Titlis. Its south side drops in a vertical rock wall several hundred metres high, while the north side is reached at T4 difficulty. It is one of only three Obwalden summits above 3,000 m, with the Titlis and Klein Titlis.

The Reissend Nollen rises to 3003 m on the border between Obwalden and Bern, east of the Wendenstöcke and west of the Titlis. Its south face drops as a vertical rock wall several hundred metres high, and the first climbing routes were opened through this wall; the north side is reached at grade T4. With the Titlis and Klein Titlis it is one of the only three-thousand-metre summits in Obwalden.

The name Reissend Nollen is a Swiss German toponym; the peak lies on the language border between Obwalden and Bern, above Engelberg and Gadmen. With the Titlis and Klein Titlis it is one of only three 3,000-metre summits in Obwalden, which shapes how local climbers regard it.

The summit is reached from the north side at hiking difficulty T4; the south face is a vertical rock wall of several hundred metres with difficult climbing routes. The mountain lies between Engelberg and Gadmen, on the Obwalden–Bern border. Approach from Engelberg, the nearest base for the northern route.

The south face drops as a vertical rock wall several hundred metres high, and the climbing routes to the summit run up it. From the north side the summit is reached at grade T4. With the Titlis and Klein Titlis, it is one of only three 3,000-metre peaks in Obwalden.