hellental, germany - 07 30 2020: dam wall of oleftalsperre with calm water below

landmark architecture bridge waterway transport facade monument building reflection memorial river stadium arch water downtown city wall hellental germany 2020: fountain dam oleftalsperre one big freshwater reservoir lakes west eifel close border belgium british called olef huge serves drinking supply flood prevention power plant included calm eifel volcanic mountains volcano rolling landscape vulkaneifel volcanic hills idyllic damwall dam wall reservoir lake freshwater