mountain stream called river of the cal, on the top of folón an picón watermills area

river water grass green stone tree moss flowers ferns pathway hiking trekking rural landscape travel rosal galicia pontevedra folasup3 picasup3 spain outdoor nature mountain natural sky trail running stream wood rock spring waterfall fall fresh scenic light environment outdoors flora leaf flow rain foliage season flowing called cal top folón picón watermills area