orrido di bellano, natural gorge created by the erosion of pioverna river, d into gigantic potholes, dark ravines and

bellano pioverna scenic rapid lombardia stream lombardy geology river waterfall bridge rock cold stone italy beauty natural water nature wood clean orrido travel groundwater ravine wet splashing outdoor outdoors view canyon spraying deep condensation tourism scenery cliff trail pool como fence mountain landscape exploration gorge glacier erosion pothole created shaped gigantic potholes dark ravines suggestive caves