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river, sometimes to a distance of thirty or forty miles, till it unites in a chain of hills, many of which are covered with sturdy pines, and others are mere heaps of naked sand or indurated earth. The ridge then continues its course until it at length becomes united with the lateral chain of the Rocky Mountains, which bounds the "Plains of Laramie" upon the southeast.

At Scott's Bluff these hills crowd themselves abruptly towards the Platte, where they present a most romantic and picturesque scenery.

Our camp was in a rich opening, or valley, two miles wide, and walled in upon the right and left by perpendicular masses of earth and rock, that tower to a height of from three to eight hundred feet. In reaching it, the trail bore leftward from the river, about seven miles, through a level prairie, by which we were inducted to the valley, without any perceptible variation of its general surface.

Near the entrance, upon our left, the spectacle was grand and imposing beyond description. It seemed as if Nature, in mere sportiveness, had thought to excel the noblest works of art, and rear up a mimic city as the grand metropolis of her empire.

There stood the representations of palaces, with their domes and balustrades; churches, with their spires and cupolas; and streets, with their gigantic dwellings, stores, work-shops, and ware-houses. And there, also, were parks, pleasure-grounds, and public squares, all so admirably defined by the agency of the winds and rains of ages, that the traveller might readily imagine himself to have arrived within the precincts of the deserted city of some peopleless country, whose splendor and magnificence once more than vied with the far-famed Palmyra of the desert, even in its best days.

To the right arose a pile of sand-rock and marl in pyramidal form, three hundred feet high, that occupied its prairie site detached from hill or other eminence.

Near this stood a more singular natural formation than any previously noticed. It described a complete circle, of one thousand feet in circumference, and attained an altitude of not far from four hundred feet. Its sides were of great regularity, and represented masses of solid masonwork, rising abruptly till within sixty or seventy feet of the summit, where they accline in a blunt, cone-like manner, reducing the periphery to one third that of its base. At this point is reposed a semi-spherical form, regularly jutting with a gradual swell upon all sides—then tapering to an oval shape till near the apex, at which the whole mass is surmounted by a rude imitation of sculptured flame, pointing upwards to the sun, as if this strange monument