precarious tree over the grand canyon edge

activity ancient arizona atmospheric attraction beautiful canyon countryside crevass deep desert destination determination enjoyment environment erosion famous formation geology grand green ground hike hill hole holiday iconic impact landscape large leisure light mist moody national natural nature opening outdoor overlooking park peaks precarious prominent resolve ridge rock sand sandstone scale scenic sedementary sky strength summer sunlit top tourism track travel tree usa vacation valley vast view viewpoint visitors vista walk walkway warm weather wild wilderness wonder