• Starting point : Saint-Mamet
  • Total distance : 16,3 km
  • Elevation : 1442 m
  • Walking : 8 h. Hard
  • Trail : 4 h. Hard

Patou presence.
Hidden above Lac Vert, Lac Bleu with its dam feeds the Portillon power station (at the bottom of the Vallée du Lis) built in 1941. It is one of 6 power stations in the Luchonnais.

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. Further up, (...)

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Last update : 08/09/2026 à 04:59:52

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