alpine alps bavaria clouds cloudy foothills of the Alp forest germany mountains munich Sunflower Fields sunset villages alp heavy-duty hill landscape machine maintenance mountain rock rocks shovel ski snow sports transportation work cold hills holidays nature outside rough scenic sky spring summer vacation winter Cervin Cervino italian Italy Matterhorn Mont Cervin Monte Cervino swiss switzerland the matterhorn the matterhorn! boat boats Lake Lucern Lake Lucerne Lake Luzerne Lucern lucerne Luzerne sail sailing Aiguille du midi Chamonix climbing glacier mont blanc Monte Bianco mountaineering peak skiing summit global warming ice vallée blanche