tree-top walk in saalbach-hinterglemm valley, alps mountains, austria, summer day

activity adrenalin alps amusement austria blue bridge copy country countryside crown day europe forest fun glemmtaler green highest hiking hinterglemm horizontal landscape leisure mountain mountains nature nobody outdoors panorama park path relaxation saalbach saalbachhinterglemm scenery season sky space sport summer sunshine top tourism track trail travel tree treetop unique vacation valley walk