Dammastock, Mountain peak in Uri and Valais, Switzerland

Dammastock is a mountain peak in the Urner Alps rising to 3,630 meters, straddling the cantons of Uri and Valais. The peak is shaped by three major glaciers: the Rhone Glacier on the western flank, the Damma Glacier to the east, and the Trift Glacier on the northern side.

The first recorded ascent took place in 1864 when Albert Hoffmann-Burkhardt, along with guides Johann Fischer and Andreas von Weissenfluh, reached the summit. This climb marked an important milestone in the exploration of the higher peaks of the Urner Alps during the era of alpine mountaineering expansion.

The summit ridge forms the border between the cantons of Uri and Valais, and the tripoint with Bern lies near the Eggstock just to the north. Politically the mountain is split between the municipalities of Göschenen and Obergoms. The name Dammastock is shared with the Damma Glacier below the east flank and with the Dammahütte on the south ridge of the Moosstock.

Two mountain shelters offer lodging for climbers: the Dammastock Hut at 2,445 meters (8,000 feet) and Hotel Tiefenbach at 2,109 meters (6,920 feet). These bases serve as starting points for a multi-day climb and allow visitors to acclimate before attempting higher elevations.

The Dammastock is the highest summit in the canton of Uri and in Central Switzerland, and the border tripoint of Bern, Valais and Uri lies near the Eggstock just north of it. Politically the mountain is split between the municipalities of Göschenen and Obergoms.