The PR-HU trail on the left bank of the Isábena Valley is a mid-mountain route that lacks signage, so extra caution is advised, and it's recommended to carry a map or GPS device. The route runs along the upper part of the slope, in an area that acts as a natural watershed between two large Pyrenean valleys: the Isábena and the Noguera Ribagorzana.

This route serves as a link between both valleys and their main points of interest, allowing connections with other marked trails in the Ribagorza region. Thanks to these connections, it's possible to design longer, more challenging itineraries or adapt the hike to shorter routes, depending on your fitness level and available time.

The route combines traditional paths and high-altitude forest tracks, crossing pastureland, former farmland, and oak and pine forests. From the higher points, there are magnificent panoramic views of the Pyrenees and the villages nestled on both slopes.

Although it doesn't present significant technical difficulty, the lack of signage makes this route a recommended option for hikers with navigational skills and experience in mountainous terrain. The possibility of linking it with other routes increases its appeal, as it allows hikers to discover different landscapes and hidden corners of the Ribagorza region.

In short, this is an ideal excursion for those seeking tranquility, nature and a different way to connect the valleys of Isábena and Noguera Ribagorzana.