añisclo canyon, in the ordesa and monte perdido national park, pyrenees

and aragonese aragón area autumn añisclo beech biodiversity biome biosphere canyon cliffs colours dams deciduous degradation directive distance ecoregion ecosystem ecosystems effectiveness european forest forests growth habitat habitats hiking huesca karst karstic limestone logging long management massif mediterranean mixed montane monte mountain mountains national oaks old ordesa park perdido pirenaica protected pyrenean pyrenees quercus range reserve senda spain trail trees viñamala