The hike takes about 6 hours and requires a certain physical form. The course is situated in the valley of Benasque and runs through the Posets-Maladeta valley. From Benasque out towards Cerler and you will have fun going up to Cerler, here we found a parking for those arriving by car and there you can start walking. Once at the cabin Santa Ana, we turned left onto the mountain lakes of Batisielles. From here begins the hard part, but it is worth it.