Lac des Autannes

Lac des Autannes is a high-alpine lake above Grimentz, in the municipality of Anniviers in the Swiss canton of Valais. It sits at 2,686 m (8,812 ft) and covers roughly 4.5 hectares. Hikers heading up from the Moiry valley toward the Col de Torrent pass reach it as a quiet stop on the way.

Where is Lac des Autannes?

The lake lies in the Val d'Anniviers, high above the village of Grimentz. It is a high-set body of water in open alpine terrain, with no buildings nearby.

How do you get to Lac des Autannes?

Most walkers start at the Moiry dam, whose crest stands at 2,248 m. By car, take the A9 to Sierre, leave at exit 29 (Sierre-Est), then drive through Vissoie and Grimentz along the Route de Moiry. There is parking at the dam. Without a car, take the train to Sierre, a postal bus to Vissoie, and change there for the bus to Moiry.

From the dam the trail crosses the crest and climbs toward the Torrent alpine pasture. About halfway between the pasture and the Col de Torrent you come to the lake, where tables and benches invite a longer break. The last stretch up to the pass is steeper.

What else is there to see nearby?

• The Moiry dam – a restaurant with a sunny terrace and a view over the reservoir stands by the crest, and a via ferrata runs along the left side of the dam. A guided tour inside the dam is available with the Pass Anniviers Liberté.
• Tour du Lac de Moiry – a 13.4 km loop of about 4.5 hours with 805 m of ascent, passing Lac de Châteauré, Lac de la Bayenna and Lac du Louché.
• Col de Torrent – from the pass you can continue toward Evolène, around 3 hours on foot. The route forms part of a stage of the Matterhorn Circuit.

When should you go?

At almost 2,700 m, the trail is most pleasant in summer and early autumn, once the snow has gone. Bring a warm layer and sun protection, since weather changes quickly at this altitude. Start in the morning to leave time for the return to the dam.

Frequently asked questions

How high is Lac des Autannes?

It lies at 2,686 m above sea level, above Grimentz.

How big is the lake?

Its surface is about 4.5 hectares, so it is a small lake.

Where is the easiest starting point?

The Moiry dam (2,248 m), which has parking, a restaurant and a postal bus connection.

Is there somewhere to rest by the water?

Yes, tables and benches stand by the lake, and the trail continues up to the Col de Torrent.