the cave adlerhorst or cave eagle`s nest höhle adlerhorst under the alpine peak piz fluaz 2814 m in the glarus alps massif

2814 adlerhorst adventure alp alpine alps background beautiful blue canton cave cliff climb climbing destination eagles environment fluaz geology glarus grass graubünden green grisons high hiking hill kanton landscape massif mount mountain mountains natural nature nest nobody outdoor outdoors panorama peak pigniupanix pile piz rock rocky scenery scenic schweiz silver sky snow stone stones summer summit sunny swiss switzerland top tourism travel trekking vacation valley view wilderness