hellental, germany - 07 30 2020: oleftalsperre, dam wall on the water side with the ladder down

vehicle boat blue mast reflection watercraft water sea skyscraper dock ship iron architecture waterway bridge roof wing sailboat sail facade hellental germany 2020: oleftalsperre height measuring scale one big freshwater reservoir lakes west eifel close border belgium british called olef dam huge serves drinking supply flood prevention wall power plant included side ladder eifel volcanic mountains volcano rolling landscape vulkaneifel volcanic hills idyllic dam wall cone curve bent shape fresh water reservoir drinking blue stability