trail along a wild river in summer forest

forest woodland trail stream jungle tree wilderness vegetation green river nature leaf plant watercourse ravine calm little mountain summer ruppertsklamm small gorge lahn valley tiny called michesbach winds canyon reserve full fallen trees rocks moved wild rough rupptesklamm piece lahnstein koblenz trails lahnwanderweg rheinsteig rupperts klamm lahntal lahn river valley hike hiking trail gorge westerwald taunus mountains wild wilderness michelsbach reserve rheinsteig lahnwanderweg natura 2000 canyon