There faced us another wall like our own. How far off it might be we could only guess. When Nature's lightning hits a man fair and square, it splits his yardstick. On recovering from this stroke, mathematicians have ascertained the width of the Valley to vary between half a mile and five miles. Where we stood the width is about two. I said a wall like our own; but as yet we could not know that certainly, for of our own we saw nothing. Our eyes seemed spell-bound to the tremendous precipice which stood smiling, not frowning at us, in all the serene radiance of a snow-white granite Boodh,--broadly burning, rather than glistening, in the white-hot splendors of the setting sun. From that sun, clear back to the first _avant-courier_ trace of purple twilight flushing the eastern sky-rim--yes, as if it were the very butment of the eternally blue Californian heaven--ran that wall, always sheer as the plummet, without a visible break through which squirrel might climb or sparrow fly,--so broad that it was just faint-lined like the paper on which I write by the loftiest waterfall in the world,--so lofty that its very breadth could not dwarf it, while the mighty pines and Douglas firs which grew all along its edge seemed like mere cilia on the granite lid of the Great Valley's upgazing eye. In the first astonishment of the view, we took the whole battlement at a sweep, and seemed to see an unbroken sky-line; but as ecstasy gave way to examination, we discovered how greatly some portions of the precipice surpassed our immediate _vis-a-vis_ in height. First, a little east of our off-look, there projected boldly into the Valley from the dominant line of the base a square stupendous tower that might have been hewn by the diamond adzes of the Genii for a second Babel-experiment, in expectance of the wrath of Allah. Here and there the tools had left a faint scratch, only deep as the width of Broadway and a bagatelle of five hundred feet in length; but that detracted no more from the unblemished four-square contour of the entire mass than a pin-mark from the symmetry of a door-post. A city might have been built on its grand flat top. And, oh! the gorgeous masses of light and shadow which the falling sun cast on it,--the shadows like great waves, the lights like their spumy tops and flying mist,--thrown up from the heaving breast of a golden sea! In California at this season the dome of heaven is cloudless; but I still dream of what must be done for the bringing-out of Tu-toch-anula's coronation-day majesties by the broken winter sky of fleece and fire. The height of his precipice is nearly four thousand feet perpendicular; his name is supposed to be that of the Valley's tutelar deity. He also rejoices in a Spanish _alias_,--some Mission Indian having attempted to translate by "_El Capitan_" the idea of divine authority implied in Tu-toch-anula.