Bortelhorn, Mountain summit in Valais, Switzerland

Bortelhorn (Punta del Rebbio) is a 3,194 m summit of the Lepontine Alps on the Swiss-Italian border, where the canton of Valais meets the province of Verbano-Cusio-Ossola. Its west flank drops toward the Gantertal and carries the small Bortel Glacier, which reaches from about 2,670 to 3,060 m. Below the west wall, at 2,107 m, stand the Bortelhütten.

The Bortelhorn lies on the Swiss-Italian border between the district of Brig in Valais and the province of Verbano-Cusio-Ossola in Piedmont. The border here follows the Lepontine Alps ridge; the 1861 date in older descriptions refers to Italian unification, not to this summit. On the west slope below the peak lies the small Bortel Glacier, between 2670 and 3060 m.

The name Bortelhorn is German, while Italian speakers on the Piedmont side call the same peak Punta del Rebbio; both names appear on maps and in guidebooks. Below the west wall, the Bortelhütten at 2107 m is the traditional base for climbers, and the small Bortelgletscher between 2670 and 3060 m is crossed on the usual route.

Most mountaineers need two days to summit, with an overnight stay at the Bortelhütte mountain shelter serving as a staging point. The ascent typically starts from Ried-Brig and requires good physical fitness and solid climbing experience.

From the summit, climbers can observe both the Rhone Valley in Switzerland and the Province of Verbano-Cusio-Ossola in Italy at the same time. This dual perspective often surprises visitors as two very different landscapes unfold from a single vantage point.