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by motor vehicle. The distance, via U.S. Highway 89, from the railroad terminal yard developed for the Glen Canyon Project, about 5 miles east of Flagstaff, to the turnoff near Cedar Ridge is approximately 88 miles. The remaining 21 miles across the relatively level plateau country is over an unimproved road which provides satisfactory access for any type of vehicle in fair weather, but during occasional wet periods, four-wheel-drive vehicles may experience difficulty. U.S. Highway 89 from Flagstaff, which was improved to accommodate Glen Canyon Dam construction traffic, would be adequate for Marble Canyon construction traffic. The construction of the 21-mile permanent access highway across the plateau from Cedar Ridge on Highway 89 to the townsite on Tatahatso Point would not involve any unusual construction problems. On the relatively flat plateau, existing or newly bladed roads would provide ready access to any section, permitting construction of the permanent highway to proceed simultaneously on a number of sections. Drawing No. 788-300-61 shows the locations of the access roads. Owing to space limitations, only minor shops and equipment storage, together with aggregate stockpiling, could be provided on the rim of the inner gorge. Administration, major fabrication plants, and warehouses would need to be located on the plateau adjacent to the top of the outer rim of the canyon. Therefore, the capacity and dependability, as well as costs of the access facilities from the outer rim to the top of the inner gorge, are of major importance. Alternative cableway and inclined railway systems were studied previous to the selection of the road plan. 20Epson Perfection 4870 Photo, 400 dpi, 8 bit, 14,395,392 byte