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 "a landmark of what Nature can do when she wishes to give an opportunity to the human race in its migrations and discoveries, without surrendering control of its liberty and its fate." Here passed the mound-building Indian and the buffalo, marking the first routes from North to South across the continent. Here later passed the first flood-tide of white men's immigration. There are few spots on the continent, it is said, where the traveler of today is brought more quickly to a pause, overcome equally by the stupendous panorama before him, and by the memory of the historical associations which will assail even the most indifferent. Ere you reach the Gap "the idea of it," writes Mr. Allen, "dominates the mind. While yet some miles away, it looms up, 1675 feet in elevation, some half a mile across from crest to crest, the pinnacle on the left towering to the height of 2500 feet. It was late in the afternoon when our tired horses began the long, winding, rocky climb from the valley to the brow of the pass. As we stood in the passway, amid the deepening shadows of the twilight and