Les Gorges du Trient Opening hours De mai à octobre. Suggestions Bread Oven Trail “Chez-les-Pillet” offers a breathtaking view over the entire Rhône valley! Discover the hamlets and the bread ovens during your walk. Marble Quarry When you arrive at the marble quarry, shout out your name to hear it echo through the rocks. Dufour fortifications Straying a little off the path, you will be able to discover all the fortifications of this strategic site.