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Drive up from Beaudéan through the Lesponne valley on the D29 and park at the Chiroulet car park, which is the end of the road.
(S/E) Head towards the back of the car park, towards the mountain and the fir trees, passing a small chapel on your left.
The hike begins in the undergrowth, following the Adour de l'Esponne torrent.
Cross the stream several times using the wooden footbridges. Be careful not to slip in wet weather! The gradient is steeper in some places, but the path is mostly flat, which is nice for warming up.
(1) After crossing the Adour de Lesponne on a footbridge, the ascent begins in earnest, lasting over an hour with a significant elevation gain. This requires considerable effort. Before turning south, take a look at the Pich d'Ouscouaou waterfall on your left.
(2) Carefully cross the stream and continue climbing south to reach Lac d'Ourrec.
(3) Descend slightly to the left to see large rocks, which you can use to cross the lake's spillway.
Continue slightly to the left, leaving the Ourrec shelter on your right (some horses like to stand there sometimes) and rejoin the path on the left, which climbs upwards. Continue to follow the yellow markings.
(4) Pass the Cabane d'Ourrec on your right above you, then descend slightly to reach the small footbridge.
(5) Cross the footbridge and bear slightly right towards the Col de Bareilles. You will begin a new climb up the switchbacks towards the pass.
(6) At the Col de Bareilles, you can:
- choose to continue on the left for a round trip to the Pic de Bizourtère
- continue straight ahead towards Lac Bleu.
Our route continues straight ahead, starting with a slightly slippery descent on very loose ground.
(7) Continue high above Lac Bleu.
Leave the path that goes around the lake on your right.
(8) A concrete shelter can be used for shelter.
Cross the stream (if it is not dry!) called Lhécou. This is the spillway and overflow of Lac Bleu.
Leave the climb to Lac Vert on your right.
Turn left at the low wall onto a stone and slate path that descends. Begin the return journey to Le Chiroulet. Keep your eyes peeled: along the way, you'll find blueberries, redcurrants, raspberries, wild strawberries... An explosion of colours and flavours!
(9) Cross the Lhécou stream twice and admire the sublime view of the waterfall.
(10) After a winding descent, you will arrive at a water reservoir before entering the undergrowth. Further down, you will find a track and the EDF power station.
(11) Follow the yellow markings to the left until you reach Chiroulet. Cross the Adour de Lesponne again. You will find the road and the car park on the left (S/E).
Visorando Member
Moderate 
Very difficult 
