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

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