panorama of the tianmen mountain peak with a view of the cave known as the heaven`s gate surrounded by the green forest and mist

999 and asia attraction background cave changsha china cliff climb climbing clouds destination door enchanting fog forest gate green hanging heaven heavens holidays hunan iconic known landscape location mist mountain national nature outdoors panorama park peak photography point popular postcard province reserve scenery shan sightseeing staircase stairs steep steps summit surrounded suspended temple tianmen tourism trail travel trip vacation view walkway wallpaper world zhangjiajie