Grand Canyon National Park in the context of "List of counties in Arizona"

The Grand Canyon is a steep-sided canyon carved by the Colorado River in Arizona, United States. The Grand Canyon is 277 miles (446 km) long, up to 18 miles (29 km) wide and attains a depth of over a mile (6,093 feet or 1,857 meters).

The canyon and adjacent rim are contained within Grand Canyon National Park, the Kaibab National Forest, Grand Canyon–Parashant National Monument, the Hualapai Indian Reservation, the Havasupai Indian Reservation and the Navajo Nation. President Theodore Roosevelt was a major proponent of the preservation of the Grand Canyon area and visited it on numerous occasions to hunt and enjoy the scenery.

Mass wasting, also known as mass movement, is a general term for the movement of rock or soil down slopes under the force of gravity. It differs from other processes of erosion in that the debris transported by mass wasting is not entrained in a moving medium, such as water, wind, or ice. Types of mass wasting include creep, solifluction, rockfalls, debris flows, and landslides, each with its own characteristic features, and taking place over timescales from seconds to hundreds of years. Mass wasting occurs on both terrestrial and submarine slopes, and has been observed on Earth, Mars, Venus, Jupiter's moon Io, and on many other bodies in the Solar System.

Subsidence is sometimes regarded as a form of mass wasting. A distinction is then made between mass wasting by subsidence, which involves little horizontal movement, and mass wasting by slope movement.

Kaibab National Forest (/ˈkaɪbæb/, KY-bab) borders both the north and south rims of the Grand Canyon, in north-central Arizona. Its 1.6 million acres (650,000 ha) is divided into three sections: the North Kaibab Ranger District (offices in Fredonia), the Tusayan Ranger District (offices in the Grand Canyon), and the Williams Ranger District (offices in Williams). It is managed by the United States Forest Service. Grand Canyon National Park separates the North Kaibab and the South Kaibab (Tusayan and Williams). The South Kaibab covers less than 1,422 square miles (3,680 km) and the North Kaibab stretches over 1,010 square miles (2,600 km). Elevations vary on the forest from 5,500 feet (1,676 m) in the southwest corner to 10,418 feet (3,175 m) at the summit of Kendrick Peak on the Williams Ranger District. The forest as a whole is headquartered in Williams.

The Mangum Fire was a wildfire in Kaibab National Forest in Arizona in the United States. The fire, which started on June 8, 2020 approximately 16 miles north of the North Rim of Grand Canyon National Park, burned a total of 71,450 acres (28,915 ha). The fire threatened the community of Jacob Lake, Arizona, resulting in its evacuation. Select highways were closed, including Highway 67, which resulted in closure of the North Rim of the Grand Canyon. Additionally, areas of the Paria Canyon-Vermilion Cliffs Wilderness were inaccessible due to closures. Four buildings were destroyed, including two historic cabins. The exact cause of the fire remains under investigation, however, fire officials have confirmed it was human caused.

The Havasupai Indian Reservation is a Native American reservation for the Havasupai people, bordering Grand Canyon National Park, in Coconino County in Arizona, United States. It is considered one of America's most remote Indian reservations. The reservation is governed by a seven-member tribal council, led by a chairman who is elected from among the members of the council. The capital of the reservation is Supai, situated at the bottom of Cataract Canyon (also known as Havasu Canyon), one of the tributary canyons of the Grand Canyon. Havasupai is a combination of the words Havasu (meaning "blue-green water") and pai (meaning "people"), thus meaning "people of the blue-green waters".

Glen Canyon National Recreation Area (shortened to Glen Canyon NRA or GCNRA) is a national recreation area and conservation unit of the United States National Park Service that encompasses the area around Lake Powell and lower Cataract Canyon in Utah and Arizona, covering 1,254,429 acres (5,076.49 km) of mostly rugged high desert terrain. The recreation area is named for Glen Canyon, which was flooded by the Glen Canyon Dam, completed in 1966, and is now mostly submerged beneath the waters of Lake Powell.

Glen Canyon NRA borders Capitol Reef National Park and Canyonlands National Park on the north, Grand Staircase–Escalante National Monument on the west, Vermilion Cliffs National Monument and the northeasternmost reaches of Grand Canyon National Park on the southwest, and the Navajo Nation on the southeast. The southwestern end of Glen Canyon NRA in Arizona can be accessed via U.S. Route 89 and State Route 98. State Route 95 and State Route 276 lead to the northeastern end of the recreation area in Utah.

Bryce Canyon National Park (/braɪs/) is a national park of the United States located in southwestern Utah. The major feature of the park is Bryce Canyon, which despite its name, is not a canyon but a collection of giant natural amphitheaters along the eastern side of the Paunsaugunt Plateau. Bryce is distinctive due to geological structures called hoodoos, formed by frost weathering and stream erosion of the river and lake bed sedimentary rock. The red, orange, and white colors of the rocks provide distinctive views for park visitors. Bryce Canyon National Park is much smaller and sits at a much higher elevation than nearby Zion National Park. The rim at Bryce varies from 8,000 to 9,000 feet (2,400 to 2,700 m).

The area is in portions of Garfield County and Kane County. It was settled by Mormon pioneers in the 1850s and was named after Ebenezer Bryce, who homesteaded in the area in 1874. The area was originally designated as a national monument by President Warren G. Harding in 1923 and was redesignated as a national park by Congress in 1928. The park covers 35,835 acres (55.992 sq mi; 14,502 ha; 145.02 km) and receives substantially fewer visitors than Zion National Park (nearly 4.3 million in 2016) or Grand Canyon National Park (almost 6 million in 2016), largely due to Bryce's more remote location. In 2024, Bryce Canyon received almost 2.5 million visitors.

The Little Colorado River (Hopi: Paayu) is a tributary of the Colorado River in the U.S. state of Arizona, providing the principal drainage from the Painted Desert region. Together with its major tributary, the Puerco River, it drains an area of about 26,500 square miles (69,000 km) in eastern Arizona and western New Mexico. Although it stretches almost 340 miles (550 km), only the headwaters and the lowermost reaches flow year-round. Between St. Johns and Cameron, most of the river is a wide, braided wash, only containing water after heavy snowmelt or flash flooding.

The lower 57.2 miles (92.1 km) is known as the Little Colorado River Gorge and forms one of the largest arms of the Grand Canyon, at over 3,000 feet (910 m) deep where it joins the Colorado near Desert View in Grand Canyon National Park. An overlook of the gorge is a Navajo Nation Tribal Park.