Parking at the Col de Beyrède (1,417 m). Access from Payolle via the Hourc forest road.
(S/E) Follow the yellow trail that climbs north-northwest towards a pass that separates the ridge (towards the top, the route on the map is incorrect).
(1) At the pass, head left towards the west and follow the ridge. Climb the first peak (1,865 m) then continue along the ridge to the Hount de Peyrou marked by a cairn.
(2) Return by the same route as on the way up to the pass.
(1) Continue along the ridge and climb the north-east ridge which leads to the Bassia sign.
(3) View of the Payolle valley and the Arbizon peaks at the Pic du Midi de Bigorre. Continue along the summit ridge to the second cairn built of dry stones. Descend carefully south-east to a pass marked by a cairn (altitude 1,850 m - not marked on the map).
(4) Leave this path, which continues to descend, and step onto the ridge line to climb south-east up the ridge leading to Cap de Castillon.
(5) Continue south-east at the end of the summit ridge and descend carefully to Pas de Bassia (an open breach in the ridge) marked by three cairns.
(6) Follow the path that descends to the right, heading south, initially in switchbacks, then turning right towards the west along a ledge in the woods. Proceed with caution as the path is narrow and the slope is very steep.
When you leave the woods, continue downhill through the pastures and join the Col de Beyrède (S/E).
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