Lake Toma (Source of the Rhine)
Lai da Tuma
A small cirque lake at 2,345 m, regarded as the source of the Rhine. It is about 1.5 hours' hike from Oberalp Pass.
Lai da Tuma lies in a cirque on the south side of Oberalp Pass. It is widely accepted as the source of the Vorderrhein, and a 'Rhine Source' sign stands by the lake. From the pass lighthouse, follow the clearly marked trail uphill for about 1.5 hours (about 3.5 km one way, with roughly 300 m of ascent). The path is in good condition and suits visitors with basic fitness. You can also continue on the classic Rhine Source loop. Mountain weather changes quickly, so bring a windproof jacket. July and August are the best months for the alpine flower meadows.
Opening hours
All day (summer hiking)
Nearby sights
- Oberalp Pass & Lighthouse
- Nätschen
- Gemsstock
- Andermatt Village & St. Peter and Paul Church
- Glacier Express
- Devil's Bridge & Schöllenen Gorge
- Hospental Castle Tower
- Sasso San Gottardo