Gallinero is probably the best MTB descent of the Pyrenees due to the variety, quality and length of its singletracks, surrounded by superb natural landscapes. The route first climbs up to Arasán by a paved road and there it goes on to the Cabaña de Bisaurri (2.100 m high) by a dirt road. The first section of the descent is the more technical one with some rocky areas. Entering the forest, the difficulty  decreases and the singletracks become faster and more pleasant. The second section finishes near Bisaurri, where another enjoyable singletrack quickly goes down to Castejón crossing an oak forest.