alps mountain lake grosssee with the famous churfirsten limestone ridge

aerial alps background berghotel bird blue churfirsten drone erosion europe famous flumserberg flumserberglove formed gallen grosssee heusee hiking hotel idyllic kanton lake lakeside landscape limestone maschgenkamm mountain mountains nature panorama panoramic path peaks quarten range ridge rock seebenalp seven sky summer sunny swiss switzerland toggenburg unterterzen view walensee water