Abandoned radar towers of observatory, Torre, Covilhã, Portugal

abandoned radar serra da estrela towers observatory torre covilha portugal star mountain range guarda dome aerial radar station old radars astronomy old radar station torre mountain peak landscape sunrise telephoto birdseye golden hour scenic mountainous serra da estrela nature park countryside rural europe mountains drone travel explore destination visit remote geography outdoors mountain landscape tranquil serra da estreal natural park viewpoint landmark attraction altitude tourism serra do estrela historic summit