• Starting point : Saint-Mamet
  • Total distance : 16,3 km
  • Elevation : 1319 m
  • Walking : 8 h. Hard
  • Trail : 4 h. Hard

Hidden above the Lac Vert, the Lac Bleu with its dam supplies the Portillon power station (at the bottom of the Lis valley) built in 1941. It is one of six power stations located in the Luchonnais region.

Depart from the Vallée du Lis car park, cross the footbridge and climb up through the beech forest to the Artigue meadow. Below the Coume hut, turn right towards the Blue Lake. (...)

Access the details of this itinerary on Cirkwi.com

Last update : 10/12/2025 à 04:38:00

Source : Cirkwi | Haute-Garonne Tourisme
Photo credit : OTI Pyrénées 31

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