vultures overflying old quarry of alcantara, now used as natural swimming pool, spain

alcantara attractions beach birdlife birdwatching caceres calm clean cool crags dam environment exceptional extracted extremadura filtrations flight fresh fulvus glide griffon gyps impressive lake local monfrague natural nature outdoors outskirts over panoramic peaceful place pool quarry quiet relaxing restful river rocky rural sand scenery scenic sheer shore site small spain spectacular spot stone swim swimming tagus tourist travel visiting vultures waters