reflection of mountains in emerald-green lake partnun in praettigau, graubuenden, switzerland.

boats reflection mountains turquoise graubuenden praettigau switzerland reflections picturesque raetikon tranquil paradise recreation emeraldgreen travel partnun outdoors attraction sulzfluh swimming landscape alpine idyllic nature green sky alps blue hiking summer peaceful lake hike partnunsee calm water swiss sunny grisons view mountain beautiful rocky scenic scenery