. The national parks portfolio. he cliff and protected by a masonry wall fourfeet high, so that it is not visible from the outside. The walls of the structureare of masonry and adobe, plastered over on the inside and outside with mud. DEVILS TOWER NATIONAL MONUMENT HP HIS extraordinary mass of igneous rock is one of the most conspicuous* features in the Black Hills region of Wyoming. The tower is a steep-sided shaft rising six hundred feet above a roundedridge of sedimentary rocks, about six hundred feet high, on the west bank ofthe Belle Fourche River. Its nearly flat top is elliptical in out
. The national parks portfolio. he cliff and protected by a masonry wall fourfeet high, so that it is not visible from the outside. The walls of the structureare of masonry and adobe, plastered over on the inside and outside with mud. DEVILS TOWER NATIONAL MONUMENT HP HIS extraordinary mass of igneous rock is one of the most conspicuous* features in the Black Hills region of Wyoming. The tower is a steep-sided shaft rising six hundred feet above a roundedridge of sedimentary rocks, about six hundred feet high, on the west bank ofthe Belle Fourche River. Its nearly flat top is elliptical in outline. Its sidesare strongly fluted by the great columns of igneous rock, and are nearly per-pendicular, except near the top, where there is some rounding; and near thebottom, where there is considerable outward flare. The tower has been scaledin the past by means of special apparatus, but only at considerable risk. The great columns of which the tower consists are mostly pentagonal inshape, but some are four or six sided. (256). 65163° —21 1, The Devils Tower, Wyoming
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Keywords: ., bookauthorunitedst, bookcentury1900, bookdecade1920, bookyear1921
