It is a simply spectacular port that unites the regions of Conflent and Capcir. It is one of the most beautiful ports in the easternmost Pyrenees.
It is very close to the Col de la Llosa, and you can take a circular route that is known as the "Route des Cols". It is also indicated on nearby road signs.
The hardest slope is the one that begins in Olette (Conflent) and goes up through Aiguatèbia. There are almost 22 km of ascent and 1,089 meters of elevation gain. It has 3 very different zones: (1) the first is a constant 5 km at 7%; (2) the second is 10 km at 4% and with some very pleasant rest areas, with beautiful views; (3) The final part is 6 km on average at 7%, since it passes the town of Railleu, although the hard part is the last 3 km, with several ramps that exceed 10%. The road is narrow and has uneven asphalt, with hardly any cars and motorcycles. For me, the final part of this port is truly spectacular and should not be missed.
The west slope begins in the town of Matamala (Capcir) and is 3 km with an average of close to 8%. It is a long irregular stretch along a narrow and very quiet road, with panoramic views of the valley when the thick black pine forest gives some opportunity.