lake lungern or natural reservoir lungerersee - canton of obwald, switzerland (naturstausee lungernsee)

lake lungern natural reservoir lungerersee canton obwald switzerland naturstausee lungernsee oder lungerensee kanton schweiz lake lucerne water sky travel nature spring landscape light forest beauty mountain green blue color vacation holiday europe beautiful skyline river tourism alps alpine wanderlust tourist peak reflection outdoor hill luzern landmark summit town scene central cold destination european high lucern mount panorama panoramic scenic schweiz swiss switzerland tranquil