Dom, mountain peak, Valais canton, southern Switzerland. Part of the heavily glaciated Pennine Alps, called the Valaisan Alps in Switzerland, it rises to 14,911 feet (4,545 metres). The Dom is the third highest peak of the Alps, after Mont Blanc and Monte Rosa, and is the highest entirely in Switzerland. It was first climbed in 1858, by the British alpinist J.L. Davies.
