Start from the upper car park at Piau Engaly.
(S/E) Take the tarmac road heading towards the Mouscadès chairlift. Pass through an electric fence (don’t forget to close it behind you).
(1) After the chairlift departure station, leave the ski run and take the path on the right. Cross the stream and follow it at a distance, roughly parallel to it, for about 500m. Continue westwards and move away from the stream. The path climbs gradually and heads south-south-west.
(2) At this junction, take the path to the right towards the Port de Campbieil (the one on the left leads to Lac de Badet) until the next junction.
(3) Continue left (south) towards the Hourquette de Héas (the other path leads to the Port de Campbieil). The path climbs gradually to the next junction, marked by a sign.
(4) At the bottom of a large scree slope, take the path on the right leading to the Hourquette de Héas. A fairly difficult 30-minute climb over scree. After passing the eternal snows, there is a large boulder with a small path branching off to the left: I recommend climbing over the boulder to avoid a tricky section.
(5) Return along the same path to the bottom of the scree slope.
(4) Then turn right (east) to return via Lac de Badet. Descend and then traverse along the hillside.
(6) At the junction marked by a sign, take the path on the left (north) which descends towards Lac de Badet (the one on the right leads to the Hourquette de Chermentas).
(7) At the lake, continue along the path northwards. After passing the shelter, carry on straight ahead until you reach the ski run; you cannot go wrong.
(8) Head back down the ski run to the Mouscadès chairlift, then follow the tarmac road back up to the upper car park (S/E).