 It then reappears in the Val dera Artiga de Lin before reaching the Aran valley, then through France and eventually to the Atlantic Ocean.The Noguera Pallaresa river, whose source is only a hundred meters from that of the Garonne, flows the opposite way towards the Mediterranean.Aran borders France on the north, the Spanish Autonomous Community of Aragon to the west and the Catalan comarques of Alta Ribagorça to the south and Pallars Sobirà to the east.