He noted the icy temperature and the very strong wind, blowing the snow and threatening to knock over the climbers. After they reached the summit, Tuckett separated from Bennen and descended via the north face with Bohren and Tairraz. He wanted to descend directly to the Lötschental, but soon after they began the descent, an avalanche started right under the feet of the climbers. They cautiously went back and descended on the Mittelaletsch. Climbing routes Northeast ridge Difficulty: PD+ Starting point: Mittelaletschbiwak (3,013 m) Valley: Fiesch (1,049 m) Southwest ridge Difficulty: AD, II Starting point: Oberaletschhütte (2,640 m) Valley: Blatten bei Naters (1,322 m) See also List of 4000 metre peaks of the Alps References This article is based on a translation of the corresponding article from the German Wikipedia, accessed on various occasions during April 2005. External links Aletschhorn on Summitpost Photo Aletschhorn from Lötschenlücke Photo Aletschhorn from Mischabelhuts Alpine four-thousanders Bernese Alps Mountains of the Alps Mountains of Valais Mountains of Switzerland Four-thousanders of Switzerland