Ravine of Petraficha, Zuriza, western valleys, Pyrenean mountain range, province of Huesca, Aragon, Spain, europe.

ACTIVE TOURISM • ARAGON • ARAGONESE PYRENEES • ARC OROGENIC EUROPE VARISCANA • AUTUMNAL • BRANCHES • CHANGE SEASON • COLORFUL • CONSERVATION • DECIDUOUS • ECOLOGY • ECOSYSTEM • ENVIRONMENT • ENVIRONMENTAL WEALTH • FITOZOOGEOGRÁFICA REGION • FOLIAGE • FOREST • FORMED DURING THE CENOZOIC ERA • GLOBAL WARMING • GLOOMY • HABITAT • HALFTIME • HERITAGE • HUESCA PROVINCE • LEAVES WARM COLOR • LEAVES • LEGAL STATUS • LIFE CYCLE • LIFE • LIVING • MOUNTAIN RANGE • MOUNTAIN TOURISM • MYSTERIOUS • NATIVE FOLDING MOUNTAIN RANGE • NATURAL BEAUTY • NATURAL WARM COLOR • NATURE PROTECTION • NATURE • NEXT TO OLD AGE • NORTH OF THE PROVINCE OF HUESCA • NORTHEAST OF THE IBERIAN PENINSULA • ORANGE COLOR • OTOÑADA • OXYGEN CYCLE • OXYGEN • PARK • PHOTOSYNTHESIS • PIRENE • PLANTA • PLANTAE • PLANTAS • PLANTS • PROTECTED AREA • PROTECTION • RESERVE • SCIENTIFIC • SEASON • SEASONAL • SEASONS BETWEEN SUMMER AND WINTER. MATURE • SEASONS • SHADOW • SPANISH-FRENCH BORDER HIGH MOUNTAINS • SUNSET • THE PYRENEES • TREE • TREES • TREETOPS • TRONCO • TRUNK • VEGETATION • WILDLIFE REFUGE • WILDLIFE • YELLOWING