At 1.6 million acres the Kaibab National Forest borders both the north and south rims of the Grand Canyon, in north-central Arizona. It is divided into three major sections: the North Kaibab Ranger District and the South Kaibab and are managed by the United States Forest Service. The South Kaibab is further divided into two districts, the Tusayan Ranger District, and the Williams Ranger District. Grand Canyon National Park separates the North Kaibab and the South Kaibab. The South Kaibab covers 1,422 square miles (3,680 km2) and the North Kaibab stretches over 1,010 square miles (2,600 km2). Elevations vary on the forest from 5,500 feet in the southwest corner to 10,418 feet at the summit of Kendrick Peak on the Williams Ranger District. The forest as a whole is headquartered in Williams.
U.S. Route 89A is a 91.74-mile (147.64 km) north–south auxiliary U.S. highway in southwestern Kane County, Utah and northeastern Coconino County, Arizona in the southwestern United States. The highway is an old routing of U.S. Route 89 from Bitter Springs, Arizona to Kanab, Utah. The state of Arizona has designated this highway the Fredonia-Vermilion Cliffs Scenic Road. The highway is used to access Grand Canyon National Park and is known for the Navajo Bridge. Until 2008, the Utah portion was signed State Route 11. The route provides the only direct road connection between the Arizona Strip and the rest of Arizona.
The Arizona Strip is the part of Arizona lying north of the Colorado River. Despite being larger in area than several U.S. states, the entire region has a population of fewer than 10,000 people. Consisting of northeastern Mohave County and northwestern Coconino County, the largest settlements in the Strip are Colorado City, Fredonia, and Beaver Dam, with smaller communities of Scenic, Littlefield and Desert Springs. The Kaibab Indian Reservation lies within the region. Lying along the North Rim of the Grand Canyon creates physical barriers to the rest of Arizona. Only three major roads traverse the region, I-15 crosses the northwestern corner while Arizona State Route 389 and U.S. Route 89A crosses the northeastern part of the strip, US 89A crosses the Colorado River via the Navajo Bridge, providing the only direct road connection between the strip and the rest of the state. The nearest metropolitan area is the St. George, Utah metro area, to which the region is more connected than to the rest of Arizona.
Kanab Creek is one of the many tributaries of the Colorado River. It begins in Kane County, Utah, just south of the watershed to the Great Basin and flows 125 miles (201 km) south to the Colorado River.
Kanab Creek Wilderness is a 75,300-acre (305 km2) wilderness area located along the Coconino/Mohave County line in the U.S. state of Arizona, approximately 30 miles (48 km) south of Fredonia. 68,600 acres (278 km2) of the Wilderness are located in the North Kaibab Ranger District of the Kaibab National Forest, the remaining 6,700 acres (27 km2) are administered by the Arizona Bureau of Land Management.
The Aquarius Mountains are a 45-mi (72 km) long mountain range in southeast Mohave County, Arizona. The range lies in the northwest of the Arizona transition zone, and at the southwest of the Coconino Plateau, a subsection of the Colorado Plateau.
The Hurricane Cliffs of southwest Utah and northwest Arizona are a red, limestone geographic feature, sets of cliffs along the western, eroded edge of the Kaibab Limestone; the cliffs are about 135-mi (217 km) long, with the south end terminus just north of the Grand Canyon.
The Moccasin Mountains is an 11-mile-long (18 km) mountain range located at the Arizona–Utah border in Mohave County, Arizona, and a small north section in Kane County, Utah.
Buckskin Mountain is a 16-mile (26 km) mountain ridge that spans from Coconino County, Arizona to Kane County, Utah in the United States, that is divided almost equally between the two counties.
The Long Valley of Utah is a 13-mile (21 km) long valley located in western Kane County. The valley is located in source water regions of waters flowing north, south, and southwest, in the west of the High Plateaus section of the Colorado Plateau; the High Plateaus section also extends into northern Arizona, the region north of the Grand Canyon.
The Defiance Plateau, part of the geologic Defiance Uplift, is an approximately 75-mile (121 km) long, mostly north-trending plateau of Apache County, Arizona, with its east and southeast perimeter, as parts of San Juan and McKinley Counties, New Mexico.
Yellow Knolls, of Arizona, is a prominence in the Virgin River Gorge's east end, located in Mohave County, part of the Arizona Strip of northwest Arizona. Yellow Knolls is located on the north side of Interstate 15, and is also in the south of the Beaver Dam Mountains Wilderness.
Aubrey Valley is a 35-mile (56 km) long valley located in southwest Coconino County, Arizona with the northwest border of Yavapai County. The valley is located at the southwest border of the Aubrey Cliffs; to the west and southwest, the Yampai Divide and the Seventyfour Plains form flatlands between four bordering mountain ranges at the northwest terminus of the Arizona transition zone.
The Middle Permian Toroweap Formation is a thin, darker geologic unit, between the brighter colored units of the Kaibab Limestone above, and Coconino Sandstone below. It is a prominent unit in Grand Canyon, Arizona, USA, found through sections of the South Rim, Grand Canyon, and the North Rim, of the Kaibab Plateau; also the Kaibab's southeast extension to Cape Royal, the Walhalla Plateau. The Colorado River of the Grand Canyon makes its excursion from due-south to due-west around the Walhalla Plateau, as it enters the east end of the Grand Canyon's interior, Granite Gorge. The formation is also found in southeast Utah.
The Toroweap Fault of northwest Arizona and southwest Utah is part of a fault system of the west Grand Canyon region, Arizona, USA; also the west perimeter regions of the Coconino and Colorado Plateaus. The Hurricane Fault originates at the Toroweap Fault, in the region of the Colorado River, and strikes as the westerly depression of the Toroweap Fault. The Toroweap strikes northerly from the Colorado at the east of Toroweap Valley, and enters south Utah; from the Colorado River, the Hurricane Fault strikes north-northwest along the west flank of the small, regional Uinkaret Mountains, the west border of Toroweap Valley. The Hurricane Fault, and the Hurricane Cliffs strike into southwest Utah as part of the west, and southwest perimeter of the Colorado Plateau. The Hurricane Cliffs are made of Kaibab Limestone, an erosion resistant, cliff-forming rock unit.
Isis Temple is a prominence in the Grand Canyon, Arizona, USA. It is located below the North Rim and adjacent to Granite Gorge. The prominence lies north of the north bank of the west-flowing Colorado River and is just north of Granite Gorge. The Trinity Creek and canyon flow due south at its west border; its north, and northeast border/flank is formed by Phantom Creek and canyon, a west tributary of Bright Angel Creek; the creeks intersect about 3 mi (4.8 km) southeast, and 1.0 mi (1.6 km) north of Granite Gorge. The Isis Temple prominence, is only about 202 ft (62 m) lower than Grand Canyon Village, the main public center on Grand Canyon’s South Rim.
The Grand Canyon Supergroup is a Mesoproterozoic to a Neoproterozoic sequence of sedimentary strata, partially exposed in the eastern Grand Canyon of Arizona. This group comprises the Unkar Group, Nankoweap Formation, Chuar Group and the Sixtymile Formation, which overlie Vishnu Basement Rocks. Several notable landmarks of the Grand Canyon, such as the Isis Temple and Cheops Pyramid, and the Apollo Temple, are surface manifestations of the Grand Canyon Supergroup.
Located directly downstream of the Little Colorado River confluence with the Colorado River, the Tanner Graben, in the Grand Canyon, Arizona, USA is a prominence and cliffside rock formation below the East Rim. Tanner Graben is located riverside, on the Colorado River, on a north-northwest bank at Mile 68.5, and lies opposite Tanner Canyon. The Tanner Rapid, created by Tanner Creek lies at the riverside foot of the graben. The graben is a pronounced feature because of the black Cardenas Basalt that forms the middle section of the graben, presumably free of debris accumulation by its cliff face steepness, and winds, and airflow drainage that course through the Colorado River's canyons; unprotected side canyons of Cardenas Basalt show accumulations as a slope-forming geologic unit, with little showing of black basalt.
The White Rim Sandstone is a sandstone geologic formation located in southeastern Utah. It is the last member of the Permian Cutler Group, and overlies the major Organ Rock Formation and Cedar Mesa Sandstone; and again overlies thinner units of the Elephant Canyon and Halgaito Formations.
The Peacock Mountains are a small, 26 mi (42 km) long mountain range in northwest Arizona, US. The range is a narrow sub-range, and an extension north, at the northeast of the Hualapai Mountains massif, which lies to the southwest. The range is defined by the Hualapai Valley to the northwest, and north and south-flowing washes on its east border, associated with faults and cliffs; the Cottonwood Cliffs are due east, and are connected to the Aquarius Cliffs southward at the west perimeter of the Aquarius Mountains; the cliffs are a result of the Aquarius Fault, which is an extension southward from the Grand Wash Cliffs and Grand Wash Fault which crosses the Colorado River at Lake Mead, and the west perimeter of the Grand Canyon/Colorado Plateau.
