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 the solemn repose of the mighty landscape, the Gap seemed to be crowded with two invisible and countless pageants of human life, the one passing in, the other passing out; and the air grew thick with unheard utterances--primeval sounds, undistinguishable and strange, of creatures nameless and never seen by man; the wild rush and whoop of retreating and pursuing tribes; the slow steps of watchful pioneers; the wail of dying children and the songs of homeless women; the muffled tread of routed and broken armies--all the sounds of surprise and delight, victory and defeat, hunger and pain, and weariness and despair, that the human heart can utter. Here passed the first of the white race who led the way into the valley of the Cumberland; here passed that small band of fearless men who gave the Gap its name; here passed the "Long Hunters;" here rushed the armies of the Civil War; here has passed the wave of westerly emigration, whose force has spent itself only on the Pacific slopes; and here in the long future must flow backward and forward the wealth of the North and the South. MOUNTAIN PASSES OF THE CUMBERLAND I The writer has been publishing during the last few years a series of articles on Kentucky. With this article the series will be brought to a close. Hitherto he has written of nature in the Blue-grass Region and of certain aspects of life; but as he comes to take leave of his theme, he finds his attention fixed upon that great mountain wall which lies along the southeastern edge of the State. At various points of this wall are now beginning to be enacted new scenes in the history of Kentucky; and what during a hundred years has been an inaccessible background, is becoming the fore-front of a civilization which will not only change the life of the State within, but advance it to a commanding position in national economic affairs. But it should not be lost sight of that in writing this article, as in writing all the others, it is with the human problem in Kentucky that he is solely concerned. He will seem to be dealing with commercial activities for their own sake. He will write of coals and ores and timbers, of ovens and tunnels and mines; but if the reader will bear with him to the end, he will learn that these are dealt with only for the sake of looking beyond them at the results which they bring on: town-making in various stages, the massing and distributing of wealth, the movements of population, the dislodgment of isolated customs--on the whole, results that lie in the domain of the human problem in its deepest phases. Consider for a moment, then, what this great wall is, and what influence it has had over the history of Kentucky and upon the institutions and characteristics of its people.