In Saint-Girons, take direction Castillon en Couserans by the D618. Continue towards Sentein. In Lascoux, turn left, cross a bridge and follow the "Vallée d'Orle / Luentein" by D704. Continue straight up the valley and take the second path on the left crossing the bridge and continue at the end of the path to the Domaine de l'Artigou following the signs.
An access plan will be sent to you before your arrival.