From the highest peaks, where survive the last glacial extensions dominated by the Aneto (3.404m) to the plain, The Ribagorza is part of a privileged place where breathtaking landscapes converge surrounded by wilderness, in many cases, still unknown. The rivers Ésera, Noguera-Ribagorzana Isábena articulate the region, forming narrow valleys and deep gorges and ravines like Obarra, Ventamillo and Montrebei.