Lacs de Fenêtre

Lacs de Fenêtre is a trio of high-alpine lakes in the municipality of Orsières, in Switzerland's Valais canton, right by the Italian border. They sit at the head of the Val Ferret near the Great St Bernard Pass, at roughly 2,450 to 2,500 m above sea level (sources differ slightly). The lakes are a classic day-hike objective in the Pennine Alps.

Where are the Lacs de Fenêtre?

The lakes lie in a basin above the La Fouly valley on the Swiss side of the ridge, but most walkers start from the Great St Bernard Pass and its hospice. Above them rises the Fenêtre de Ferret (2,698 m), a pass that carries the Swiss-Italian border. From around it you can see Mont Dolent and the Grand Golliat.

How do you get there?

The easiest approach is to reach the Great St Bernard Pass and set off on foot. A bus runs from La Fouly, the main village of the Val Ferret, via Orsières up to the pass. The TMR transport company sells a hiker's ticket (CHF 20 adult, CHF 10 child) covering a ride from Orsières to Ferret and the return from the Hospice to Orsières, so you can walk a loop without retracing your steps.

Which routes lead to the lakes?

• Short loop: about 6.75 km, around 590 m of ascent and roughly 3.5 hours, via the Fenêtre de Ferret.
• Long loop: about 11 km, nearly 1,000 m of ascent and 5 to 6 hours. It passes the Pas des Chevaux, the Grand Lé lakes and the Col des Bastillons, then the Fenêtre lakes and the Fenêtre de Ferret. It is rated harder.

The Swiss trail is waymarked 210, the Italian side 103 or 13a. Walking clockwise is recommended, as the climb to the Col des Bastillons is more pleasant than the descent.

When should you go?

The route is walkable in summer, typically July to September. Early in the season, patches of snow can linger on the passes, especially the Pas des Chevaux, so factor that in. Weather changes fast at this altitude, so pack a warm layer and sun protection.

Frequently asked questions

How many lakes are there? Three, close together below the Fenêtre de Ferret.

Is the hike difficult? The short loop is considered easy and well marked. The longer variant over the Col des Bastillons demands better fitness.

Can I get there by public transport? Yes, by bus from La Fouly or Orsières to the Great St Bernard Pass, then on foot.

Do I cross the border? The Fenêtre de Ferret sits on the Italian border and part of the trail runs on the Italian side, so carry photo ID.