The Project Gutenberg eBook of Rainbow Bridge National Monument, Utah (1951)

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Title: Rainbow Bridge National Monument, Utah (1951)

Author: United States. National Park Service

Release date: June 25, 2019 [eBook #59811]

Language: English

Credits: Produced by Stephen Hutcheson, Lisa Corcoran and the Online

Distributed Proofreading Team at http://www.pgdp.net

*** START OF THE PROJECT GUTENBERG EBOOK RAINBOW BRIDGE NATIONAL MONUMENT, UTAH (1951) ***

RAINBOW BRIDGE

NATIONAL MONUMENT

UTAH

UNITED STATES DEPARTMENT OF THE INTERIOR

Oscar L. Chapman, Secretary

NATIONAL PARK SERVICE

Arthur E. Demaray, Director

RAINBOW BRIDGE

NATIONAL MONUMENT

Remote in spectacular red canyon country stands majestically beautiful Rainbow Bridge, the most stupendous of its kind and one of the great wonders of the world.

The inspiration gained by a visit to Rainbow Bridge National Monument is supreme. The majestic beauty of the bridge affects people in many ways. The delicate balance, graceful sweep, symmetry, beautiful toning of color, and superb setting of this rainbow-shaped stone arch suggest Divine guidance during its creation. The aborigines must have sensed this, for they built altars here.

Rainbow Bridge stands in the semidesert country of southeastern Utah. It nestles among canyons carved by streams that wind their way from the northern side of Navajo Mountain toward the Colorado River. It spans Rainbow Bridge Canyon and the tiny streamlet in its bottom.

Rainbow Bridge is greater than any other known natural bridge in size, in color, and in its almost perfect symmetry. With a 278-foot span, the bridge gracefully arches to a height of 309 feet—large enough to straddle our capitol building in Washington, D. C. Thicker at the top than a three-story building (42 feet), it is wide enough (33 feet) to accommodate the average highway.

Rainbow Bridge stands in one of the most remote and inaccessible areas in the United States. So rugged is the surrounding Rainbow Plateau that few of the Navajo and Paiute Indians who live nearby have ever seen the bridge.

HISTORY OF DISCOVERY

While leading an archeological expedition through southeastern Utah and northern Arizona during the summer of 1908, Dr. Byron Cummings, then Dean of Arts and Sciences, University of Utah, became interested in rumors of a great stone arch somewhere in the vicinity of Navajo Mountain. Mr. and Mrs. John Wetherill, of Oljato, Utah, related to him rumors of the arch which were prevalent among the Indians. Mrs. Wetherill later learned from Nasja, a Paiute Indian from Paiute Canyon, that his son, Nasja-begay, had actually seen the great stone arch and could return to it.

During July 1909, Dr. Cummings formulated plans to set out in search of the bridge. There were delays in obtaining the necessary guides. In the meantime, Dr. Cummings received word that W. B. Douglass, a Government surveyor, was en route to the area also to look for the arch. Subsequently, the Cummings-Douglass parties met and joined in the search for the Nonnozoshi, which was the Navajo word for the great stone arch.

The journey lasted several days. The party crossed canyons and “slick rock” surfaces where the horses slipped and skidded. Frequently, it was necessary to retrace portions of the course, because forward progress was blocked by “rimrock” ledges which the horses were unable to cross. There were more canyons, some with dry, boulder-choked beds, others with water and dense brush.

Across a scrub juniper (cedar) flat, and down into the last canyon they went. This was Nonnezoshi Biko, the Indian guide’s name for the canyon of the great stone arch, or Rainbow Bridge Canyon of the present.

The horses, as well as the men, were fagged because of the hard trail and shortage of forage and water. The footsore procession trudged forward; and in the late afternoon of August 14, 1909, the party rounded a bend in the canyon, and Dr. Cummings became the first white man to see the largest and most beautiful of all known stone arches, Rainbow Bridge.

How a natural bridge is formed

HOW WAS IT FORMED?

Geologists tell us that, at the time of the formation of the rocks from which Rainbow Bridge was later carved, the physical environment of that vicinity may not have differed greatly from much of the present Southwest. Broad valleys surrounded by highlands were present.

Run-off from rainfall in the highlands brought great quantities of gravel, sand, and mud, which were spread as horizontal sheets over the floors of the valleys. Locally there were shallow lakes.

Mud and sand were deposited in the lakes, and evaporation of the water produced limy and gypsum-filled muds. These sediments were compressed by being deeply buried to form the layers belonging to the Kayenta formation, part of which is the thin-bedded stratum exposed in the canyon beneath Rainbow Bridge.

Following this period of deposition, there was a changed environment during which sand accumulated until it was several hundred feet in thickness. It was deposited in curved cross-bedded layers in dunes, later to be blown away and redeposited again and again. This produced a complex system of cross-bedding throughout the entire formation.

In time, a blanket of other rock materials was deposited by wind and water over the shifting sand. Percolating water, with lime and gypsum in solution, aided in making the material firm and hard to form what has been named the Navajo sandstone.

Then followed a general uplift of the entire region. Drainage courses traversed the newly formed rocks and the principal streams carved broad valleys with sweeping curves or meanders. The wind and other forces of weather chiseled away at the rocks to form “slick rock” surfaces and the dome-shaped hills called whalebacks and baldheads.

A large mass of molten rock pushed outward from the interior, arching the earth’s crust to form Navajo Mountain. This local uplift caused small streams to furrow canyons across the soft cross-bedded Navajo sandstone. It also caused the large streams to deepen their channels; those with broad valleys, through necessity, followed the former meandering course.

This frequently gave rise to blocks of solid rock, called “fins” and “necks,” standing between entrenched meanders. It was one of these “necks” from which Rainbow Bridge was formed.

When the “neck” was once formed, running water laden with cobbles and sand scoured at the sides. Frost action and expansion and contraction, due to temperature changes, loosened great slabs of rock as well as particles. Gravity helped to remove them. Eventually, an opening was worn through the “neck.” This gave the stream a direct course through the “neck” rather than around it. Continuing erosion enlarged the opening and deepened the gorge. Thus, the canyon spanned by Rainbow Bridge came into being.

Mother Nature used the less severe forces of weathering for shaping and polishing the outline of Rainbow Bridge. For example, when moisture freezes within a crevice it exerts pressure on the surface of a rock and causes the outer portion to shell off, forming a relatively smooth surface. The Navajo sandstone is particularly subject to this type of weathering. It is porous and the curved layers of the cross-beds are held together with weak, natural cement that is easily removed by percolating water.

Dissolving of the cementing materials and prying action by frost are the chief agents for carving the rock. The cross-bedding is important in controlling the shape. Thus, the combination of several factors, over a long period of time, developed for us the arch as we now see it.

In the words of J. B. Priestly “How do we know that the Rainbow Bridge is not itself a kind of symphony, no more to be completely explained by geology than Beethoven is by acoustics?”

RAINBOW BRIDGE TRAIL FROM RAINBOW LODGE, ARIZONA, TO RAINBOW BRIDGE NATIONAL MONUMENT, UTAH

Horse and Foot Trail

RAINBOW BRIDGE NATIONAL MONUMENT EL. 3880′

Echo Spring Camp EL. 3860′

RAINBOW BRIDGE CANYON EL. 3840′

REDBUD PASS

SPRING EL. 4280′

CLIFF CANYON

EL. 6480′

EL. 6600′

Rainbow Lodge EL. 6280′

November 1950 RB-N.M. 7001

Vertical Cliff

Salmon pink is the predominant color of the sandstone from which the arch is carved. This color is modified by streaks of red extending down the sides of the structure. These stains are due to iron oxide, or hematite, which is soluble in water. As rain fell on the upper part of the arch, it dissolved some of the hematite and as the water moved down the sides it dried, leaving streaks of variegated colors—mostly reds and browns. The coloring becomes brilliant in the light of the late afternoon sun. This is probably the basis for the Indian legends that the arch is a rainbow changed to stone.

The trail descends 2,000 feet into Cliff Canyon

OTHER INTERESTING FEATURES

Water dripping into the pools near the bottom of Rainbow Bridge Canyon is from rain water that has seeped down through the Navajo sandstone. When the water reaches impervious rock layers in the underlying Kayenta, it is concentrated, but eventually it seeps out along the walls of the canyon, forming springs.

Plants grow in profusion nearby. Maidenhair fern and wild orchids are nestled in the shade. In addition, there are Indian paintbrush, loco, lupines, daisies, asters, yucca, sunflowers, evening-primroses, columbine, scarlet-bugler, and mariposa-lily.

ESTABLISHMENT AND REGULATIONS

Rainbow Bridge was proclaimed a national monument on May 30, 1910, by President Taft. One hundred-sixty acres were placed under the protection of the National Park Service. The monument is a sanctuary for all wildlife, and hunting is prohibited. No plant life, other natural features, or Indian artifacts may be gathered, cut, destroyed, or removed from the monument. Visitors to the area are particularly advised that the defacing of native sandstone with names or dates is vandalism and that vandals will be prosecuted.

HOW TO REACH RAINBOW BRIDGE

The bridge may be approached from three directions: 1. From U. S. No. 89 to Tuba City, Tonalea, and then Rainbow Lodge, where mules are available for the 14-mile trail trip. 2. From Mexican Hat by boat down the San Juan and Colorado Rivers to Forbidden Canyon and 6 miles on foot to the bridge. 3. From Lees Ferry 68 miles upstream by boat to Forbidden Canyon and 6 miles on foot to the bridge.

Reservations for the boat trips should be made well in advance by addressing J. Frank Wright, Mexican Hat Expedition, Blanding, Utah, or Art Green, Soap Creek, Ariz., via Cameron, Ariz.

FACILITIES

Meals, lodging, guide service, and mules are available at Rainbow Lodge from April 1 to November 15.

Campers in the area should provide themselves with gasoline, oil stoves, or charcoal briquets. Firewood is not available, and the cutting of trees, dead or alive, is prohibited. A small spring under the bridge provides water for campers.

ADMINISTRATION

Rainbow Bridge National Monument is a part of the National Park System administered by the National Park Service, United States Department of the Interior.

There is no resident personnel at Rainbow Bridge. For information relating to the monument write the Superintendent, Navajo National Monument, Tonalea, Ariz., who is in direct charge of the area.

RAINBOW BRIDGE NATIONAL MONUMENT AND VICINITY

RAINBOW BRIDGE NATIONAL MONUMENT

FORBIDDEN CANYON

PIUTE CANYON

Navajo Mountain Elev. 10,416′

RAINBOW LODGE

Dunn

Piute

NAVAJO NATIONAL MONUMENT

HEADQUARTERS AREA

INSCRIPTION HOUSE RUIN

INSCRIPTION HOUSE

BETATAKIN RUIN

KEET SEEL RUIN

MARSH PASS

State Highway 47

Mexican Hat

Kayenta

To Bluff 20 Miles

U. S. 89

The Gap

Marble Canyon

Cameron

To Grand Canyon National Park North Rim 85 Miles

To Flagstaff 51 Miles

State Highway 64

To Grand Canyon National Park South Rim 57 Miles

To Chinle 20 Miles (Approx.)

To Two Guns 75 Miles (U.S. 66)

To Holbrook 80 Miles

To Shiprock 105 Miles

COLORADO RIVER

Navajo Creek

NAVAJO CANYON

NAVAJO BRIDGE 467 FEET ABOVE COLORADO RIVER

GLEN CANYON

Lees Ferry

LITTLE COLORADO CANYON

San Juan River

MONUMENT VALLEY

Tyende Mesa

Agathia Peak 6,825

Chaistla Butte

Comb Ridge

HOPI INDIAN RESERVATION

NAVAJO INDIAN RESERVATION

ECHO CLIFFS

Dinnehotso

Rock Point

Kaibito

Mormon Ridge

Shonto Spring

Wildcat Peak

Rough Rock

Tonalea (Red Lake)

Tuba City

Zillesa Mesa

Moenkopi Plateau

November 1950 RB-N.M. 7000

Many of the roads in these reservations are not always passable. Inquiry should be made before attempting a trip.

U. S. GOVERNMENT PRINTING OFFICE: 1951—O-939554

For sale by the Superintendent of Documents, U. S. Government Printing Office

Washington 25, D. C.—Price $3.75 per 100

Transcriber’s Notes

- This eBook is based on a U.S. government publication which is public domain in the United States.

- Corrected a few palpable typos.

- Within the map, transcribed labels, and added italicized text where needed to define the context.

- In the text versions only, text in italics is delimited by _underscores_.

*** END OF THE PROJECT GUTENBERG EBOOK RAINBOW BRIDGE NATIONAL MONUMENT, UTAH (1951) ***

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Table of Contents

RAINBOW BRIDGE NATIONAL MONUMENT UTAH

HISTORY OF DISCOVERY

HOW WAS IT FORMED?

OTHER INTERESTING FEATURES

ESTABLISHMENT AND REGULATIONS

HOW TO REACH RAINBOW BRIDGE

FACILITIES

ADMINISTRATION

Transcriber’s Notes

THE FULL PROJECT GUTENBERG LICENSE