hoces del río duratón natural park, castilla y león, spain

castilla leon destination duraton ecology ecosystem environment geologic gorges habitat hoces natural history park nature protected area river rock segovia sepulveda spain stone tourism tourist travel vacation voyage wild wildlife zoology geologist formation geology reserve parkland conservation observation people beauty conservancy environmental eco landscape scenics nonurban scene outdoors tranquility relaxation tranquil del rã­o duratã³n leã³n europe ri­o