The GR10 crosses the Basque Béarn Pyrenees, it starts at Hendaye on the Basque coast. The mountain opens to Spain with the passes of Pourtalet, Somport, Larrau, Ispeguy and Ibardin. You can hike the high peaks of the Pic du Midi d'Ossau or the Pic d'Anie. What a great program to discover!