Les Gorges du Trient Opening hours De mai à octobre. Suggestions Durand Gorges In the top 10 of the most beautiful gorges in Europe, the Durnand will allow you to savour the coolnes of its waterfalls. Sorniot, lower lake This balcony trail offers a plunging view of the plain and a panoramic view of the Mont-Blanc and Grand-Combin mountains. Dufour fortifications Straying a little off the path, you will be able to discover all the fortifications of this strategic site.