National Geographic : 1929 Jun
Photograph by Hans Tittel SAPSUCKER DECORATIONS ON A HETCH HETCHY VALLEY PINE Year after year the birds returned to the same tree and drilled their holes into its bark. To repair the damage effected by their ravages, the tree rings have grown thicker at each point of attack. Photograph by Alexander Wiederseder THE OVERHANGINGROCK AT GLACIER POINT, YOSEMITE From this point of vantage asuperb panorama ofmountain, lake, forest, and canyon is revealed. Ifthe men on the rock should lose their balance, they would travel straightdown for nearly two-thirds of amile.