detail of huge reservoir in the spanish pyrenees, on the border of catalonia and aragon. panta d escalas swamp of stairs

aragon beautiful blue calm catalonia clean countryside environment escalas forest geography green journey lake landscape mountain mountainous mountains mountainside national natural nature outdoor panorama panoramic pantano park peaceful peak pine pond pyrenees relaxing reservoir river scenery scenic spain spanish stairs swamp tourism tranquil tranquility travel tree trekking valley view water