elevated view of a stone arch bridge crossing over the lush orrido di sant'anna gorge in traffiume, cannobio

italy piemont cannobio traffiume orrido di sant 039 anna bridge arch stone gorge river nature green lush foliage forest trees water rocky landscape scenic outdoors natural environment serene tranquil greenery vibrant wilderness architecture historical ecotourism preservation conservation travel tourism destination view remote exploration adventure retreat escape traditional rustic moss waterflow valley ecology geology flora