hengifoss waterfall landscape in iceland with hengifossa river gorge and red basaltic layers of clay

basalt basaltic canyon cascade clay cliff cloud column drop east europe fall fljotsdalshreppur fljotsdalur flow geology gorge hanging hengifoss hengifossa hiking iceland icelandic island landmark landscape lava layer litlanesfoss mountain natural nature outdoor power red river riverbed rock scenery scenic sky spray stone stream tourism travel valley volcanic water waterfall layers