“As you ride or walk along the winding road up the level valley amid the noble pines and spruces and oaks, and past the groves and bits of meadow and the camps of many tents, and the huge mossy granite boulders here and there reposing in the shade of the trees, with the full, clear, silent river winding through the plain near you, you are all the time aware of those huge vertical walls, their faces scarred and niched, streaked with color, or glistening with moisture, and animated with waterfalls, rising up on either hand, thousands of feet high, not architectural, or like something builded, but like the sides and the four corners of the globe itself.”