National Geographic : 1924 May
494 THE NATIONAL GEOGRAPHIC MAGAZINE liberal. A guess at the fall of a Rapid is almost invariably too high. The fall of a river in a given dis Stance varies slightly between high and low water, it is true, but not , enough to account for the difference t between the actual descents and the , estimates of earlier voyageurs. So Moreover, both of Powell's voyages a were made at approximately the o same water stage as was that of last Q summer's survey. The walls of the canyon, which r- were 730 feet above the river at Badger Creek, increased steadily in height as we proceeded, with an ever broader streak of maroon , chocolate Hermit shale showing as o we penetrated deeper into the gorge. SAbout two miles below Badger q Creek we came to a striking monu c, ment of dolomite in the middle of the river. It looked solid enough to be an outcropping of bedrock, but , must have fallen from one of the o higher formations. As it is not mentioned by previous navigators, z and as the fracture from which it . appears to have come has not weath ered greatly, it is probably of very recent origin. O Upon reaching a long, straight Stretch of canyon running east and z west, we landed to photograph a great rectangular cliff which tow Z ered against the sky-line, revealing v breaks at both ends, neither of f which was positively identifiable as the course of the river. A PORTAGE AT FATAL SOAP CREEK RAPID .. A heavy roar became audible as o we neared the bend, indicating the presence of the major rapid below Soap Creek-a mile or two nearer to Badger Creek than was shown , by existing maps. S An extensive fan of white boul ders - limestone - completed the a identification of a rapid with one of the worst reputations on the Colo rado. Landing, we picked a camp site on the right bank Ioo yards above the break of the fall.