panorama of the swiss alps mountain lake lai nair black lake with refleciton

alpine alps autumn banner black colorful engadin engiadina fall forest golden graubunden grisons hike hiking idyllic lai lake landscape larch lower mirror mountain mountains nair natural nature orange pano panorama panoramic refleciton reflection scenery scenic schwarzsee scoul scuol season sky still swiss switzerland tarasp trail tranquil trees vulpera water white yellow