Nature lies dormant in winter; during this time the Swiss National Park is closed to visitors.

From mid-November onwards there is generally so much snow that footpaths are no longer visible, and there is a risk of avalanches. From now until the end of May the Park remains closed to visitors.

In order to prevent the disturbance of wildlife during the winter, the National Park is not accessible during this season – no skiers, snowboarders or snowshoe walkers.

In winter animals in the wild withdraw to territories where they can find protection and food. Undisturbed by man, their chances of survival are increased, as they do not have to expend valuable energy in flight.

The main Pass dal Fuorn (Ofenpass) road remains open in winter, ensuring access to the Val Müstair. Along the road, the parking areas within the Park and the Hotel Parc Naziunal Il Fuorn are closed in winter.