Rainbow Waters Hike

  • Sport
  • Pedestrian sports
  • Hiking itinerary
Elevation : 1350m
Entrée du Vallon de They, Route de Chésery, CH - 1875 Morgins
"Les Couleurs de l'Eau" is a fascinating interpretive trail, featuring nine informational panels in the valley of They, between Morgins and the Portes du Soleil pass.
Morgins - Sassex - Lac de Chésery - Lac Vert - Col Portes du Soleil - Tovassière - Morgins

The trailhead is located at the entrance of the Vallon de They, just past the Morgins Ranch.

The itinerary offers ten interpretive panels along the route through the They Valley, between Morgins and the Col des Portes du Soleil.

Walking upriver to the source of the Vièze, you’ll see that the water changes colour; alternately red, blue, yellow, white, and green! The panels provide geological, hydrological, and hydrogeological explanations as to why the colours change so strikingly, how water and minerals interact, how water can suddenly disappear or appear out of nowhere, and why these mountains are so uniquely special.

Keep your eyes peeled for:
- Red at the Eau Rouge Spring
- Blue at the edge of the Vièze River
- Yellow at the Fontaines Jaunes
- White at the Fontaines Blanches
- Green at the Lac Vert

You'll find alpine restaurants along the way - the Chésery Hut at Lac Vert, or the Tovassière and alpage du Vieux They restaurant.

Services

Services

Picnic area
Updated on 18 July 2025 at 14:13
by Région Dents du Midi SA
(Offer identifier : 5276405)
Report mistake
Close
Filter search
Page types
  • All
  • Articles
  • Agenda
  • Lists
Aucun résultat