"The 'sacred place' here mentioned is the site of the world-renowned 'Pipe-stone Quarry.' From this place has the North American Indian ever obtained material for his pipe, and from no other spot. Catlin asserts that in every tribe he has visited (numbering about forty, and extending over thousands of miles of country) the pipes have all been made of this red pipe-stone. Clarke, the great American traveller, relates that in his intercourse with many tribes who as yet had had but little intercourse with the whites he {117} learned that almost every adult had made the pilgrimage to the sacred rock and drawn from thence his pipe-stone. So peculiar is this 'quarry' that Catlin has been at the pains to describe it very fully and graphically, and from his account the following is taken: "'Our approach to it was from the east, and the ascent, for the distance of fifty miles, over a continued succession of slopes and terraces, almost imperceptibly rising one above another, that seemed to lift us to a great height. There is not a tree or bush to be seen from the highest summit of the ridge, though the eye may range east and west, almost to a boundless extent, over a surface covered with a short grass, that is green at one's feet, and about him, but changing to blue in distance, like nothing but the blue and vastness of the ocean. "'On the very top of this mound or ridge we found the far-famed quarry or fountain of the Red Pipe, which is truly an anomaly in nature. The principal and most striking feature of this place is a perpendicular wall of close-grained, compact quartz, of twenty-five and thirty feet in elevation, running nearly north and south, with its face to the west, exhibiting a front of nearly two miles in length, when it disappears at both ends, by running under the prairie, which becomes there a little more elevated, and probably covers it for many miles, both to the north and south. The depression of the brow of the ridge at this place has been caused by the wash of a little stream, produced by several springs at the top, a little back from the wall, which has gradually carried away the superincumbent earth, and having bared the wall for the distance of two miles, is now left to glide for some distance over a perfectly level surface of quartz rock; and then to leap from the top of the wall into a deep basin below, {118} and thence seek its course to the Missouri, forming the extreme source of a noted and powerful tributary, called the "Big Sioux."