National Monuments and Parks

Far View Visitor Center, Mesa Verde National Park

Mesa Verde National Park is a U.S. National Park and UNESCO World Heritage Site located in Montezuma County, Colorado, United States. It was created in 1906 to protect some of the best preserved cliff dwellings in the world. The park occupies 81.4 square miles (211 km2) (211 square kilometers) near the Four Corners and features numerous ruins of homes and villages built by the Ancestral Puebloan people, sometimes called the Anasazi.
The Anasazi inhabited Mesa Verde anywhere between 550 to 1300 AD. These people were mainly subsistence farmers; they grew crops on nearby mesas. Their primary crop was corn, which was also was the major part of their diet. Men were also hunters which further increased their food supply. The women of the Anasazi were famous for the elegant basket weaving. Anasazi pottery is just as famous as their baskets; their artifacts, even today, are highly prized. Since the Anasazi kept no written records, their artifacts are the only link to understanding their interesting culture.
By 750 AD, the people were building mesa-top villages made of adobe. By the late 12th century they began to build the cliff dwellings for which Mesa Verde is famous.
Mesa Verde is best known for cliff dwellings, which are structures built within caves and under outcropping in cliffs — including Cliff Palace, which is thought to be the largest cliff dwelling in North America. The Spanish term Mesa Verde translates into English as "green table." Approximately 600 of the over 4700 archeological sites found in Mesa Verde National Park are cliff dwellings.



Four Corners National Monument
The Four Corners is a region of the United States consisting of the southwestern corner of Colorado, northwestern corner of New Mexico, northeastern corner of Arizona and southeastern corner of Utah. The Four Corners area is named after the quadripoint where the boundaries of the four states meet, where the Four Corners Monument is located. The majority of the Four Corners region is part of semi-autonomous indigenous American Indian nations, the largest of which is the Navajo Nation, followed by Hopi, Ute and Zuni Indian nations. The Four Corners region is mostly rural, rugged and arid. In addition to the monument, commonly visited areas within Four Corners include Monument Valley, Mesa Verde National Park and Canyon de Chelly National Monument. The most populous city in the Four Corners region is Farmington, New Mexico, followed by Durango, Colorado.
The United States first acquired the area now called Four Corners from Mexico after the Mexican–American War in 1848. In 1863 Congress created Arizona Territory from the western part of New Mexico Territory. The boundary was defined as a line running due south from the southwest corner of Colorado Territory, which had been created in 1861. This was an unusual act of Congress, which almost always defined the boundaries of new territories as lines of latitude or longitude, or following rivers. By defining one boundary as starting at the corner of another Congress ensured the eventual creation of four states meeting at a point, regardless of the inevitable errors of boundary surveying.  The area was first surveyed by the U.S. Government in 1868 as part of an effort to make Colorado Territory into a state, the first of the Four Corners states formed. The first marker was placed at the spot in 1912. The first Navajo tribal government was established in 1923 to regulate an increasing number of oil exploration activities on Navajo tribal lands.


Great Basin National Park


The Great Basin can be defined topographically, hydrologically, or biologically. This map shows the different boundaries depending on definition.
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The Great Basin can be defined hydrographically, topographically, or biologically.
What is the Great Basin?Defining the Great Basin begins with a choice: are you looking at the way the water flows (hydrographic), the way the landscape formed (geologic), or the resident plants and animals (biologic)? Each of these definitions will give you a slightly different geographic boundary of the Great Basin, but the hydrographic definition is the most commonly used. 
The Hydrographic Great Basin is a 200,000 square mile area that drains internally. All precipitation in the region evaporates, sinks underground or flows into lakes (mostly saline). Creeks, streams, or rivers find no outlet to either the Gulf of Mexico or the Pacific Ocean. The region is bounded by the Wasatch Mountains to the east, the Sierra Nevada to the west, and the Snake River Plain to the north. The south rim is less distinct. The Great Basin includes most of Nevada, half of Utah, and sections of Idaho, Wyoming, Oregon, and California. The term "Great Basin" is slightly misleading; the region is actually made up of many small basins. The Great Salt Lake, Pyramid Lake, and the Humboldt Sink are a few of the "drains" in the Great Basin.
The Basin and Range region is the product of geological forces stretching the earth's crust, creating many north-south trending mountain ranges. These ranges are separated by flat valleys or basins. These hundreds of ranges make Nevada the most mountainous state in the country.
The Great Basin Desert is defined by plant and animal communities. The climate is affected by the rain shadow of the Sierra Nevada and Cascade Mountains. It is a temperate desert with hot, dry summers and snowy winters. The valleys are dominated by sagebrush and shadescale. The biologic communities on the mountain ranges differ with elevation, and the individual ranges act as islands isolated by seas of desert vegetation. Because the Great Basin exhibits such drastic elevation changes from its valleys to its peaks, the region supports an impressive diversity of species, from those adapted to the desert to those adapted to forest and alpine environments.
Great Basin National Park preserves a small representative piece of this entire region.

Hoovenweep National Monument

Human Prehistory

Human habitation at Hovenweep dates to over 10,000 years ago when nomadic Paleoindians visited the Cajon Mesa to gather food and hunt game. These people used the area for centuries, following the seasonal weather patterns. By about A.D. 900, people started to settle at Hovenweep year-round, planting and harvesting crops in the rich soil of the mesa top. By the late 1200s, the Hovenweep area was home to over 2,500 people.
Ancestral Puebloans
The towers of Hovenweep were built by ancestral Puebloans, a sedentary farming culture that occupied the Four Corners area from about A.D. 500 to A.D. 1300. Similarities in architecture, masonry and pottery styles indicate that the inhabitants of Hovenweep were closely associated with groups living at Mesa Verde and other nearby sites.
The ancestral Puebloans prepared their land for cultivation much like farmers do today. They created terraces on hillsides, formed catch basins to hold storm run-off, and built check dams to retain topsoil that would otherwise wash away. Storage granaries under the canyon rims protected harvests of corn, beans and squash for later use.
Most of the structures at Hovenweep were built between A.D. 1200 and 1300. There is quite a variety of shapes and sizes, including square and circular towers, D-shaped dwellings and many kivas (Puebloan ceremonial structures, usually circular). The masonry at Hovenweep is as skillful as it is beautiful. Even the cliff dwellings of Mesa Verde rarely exhibit such careful construction and attention to detail. Some structures built on irregular boulders remain standing after more than 700 years.
Many theories attempt to explain the use of the buildings at Hovenweep. The striking towers might have been celestial observatories, defensive structures, storage facilities, civil buildings, homes or any combination of the above. While archeologists have found that most towers were associated with kivas, their actual function remains a mystery.
Departure
By the end of the 13th century, it appears a prolonged drought, possibly combined with resource depletion, factionalism and warfare, forced the inhabitants of Hovenweep to depart. Though the reason is unclear, ancestral Puebloans throughout the area migrated south to the Rio Grande Valley in New Mexico and the Little Colorado River Basin in Arizona. Today's Pueblo, Zuni and Hopi people are descendants of this culture.
European History
The first historic reports of the abandoned structures at Hovenweep were made by W.D. Huntington, the leader of a Mormon expedition into southeast Utah in 1854. The name "Hovenweep" is a Paiute/Ute word meaning "Deserted Valley" which was adopted by pioneer photographer William Henry Jackson in 1874. In 1917-18, J.W. Fewkes of the Smithsonian Institution surveyed the area and recommended the structures be protected. On March 2, 1923, President Warren G. Harding proclaimed Hovenweep a unit of the National Park System.


Pipe Springs National Monument

Pipe Spring National Monument is located in the U.S. state of Arizona, and is rich with American Indian, early explorer, and Mormon pioneer history. The National Monument was listed on the National Register of Historic Places on October 15, 1966, and the boundaries of the Pipe Spring National Monument Historic District (a portion of the monument) were expanded in October 2000.[1]
The water of Pipe Spring has made it possible for plants, non-human animals, and people to live in this dry desert region. Ancestral Puebloans and Kaibab Paiute Indians gathered grass seeds, hunted animals, and raised crops near the springs for at least 1,000 years.
Pipe Springs was discovered and named by the 1858 Latter-day Saint missionary expedition to the Hopi mesas led by Jacob Hamblin. In the 1860s Mormon pioneers from St. George, Utah, led by James M. Whitmore brought cattle to the area and a large cattle ranching operation was established. In 1866, conflict with the native peoples of the area, Navajo and Paiute, flashed into violence, and by 1872 a protective fort was built over the main spring. The following year the fort and ranch was purchased by Brigham Young for The Church of Jesus Christ of Latter-day Saints. The LDS Bishop of near-by Grafton, Utah, Anson Perry Winsor, was hired to operate the ranch and maintain the fort, soon called Winsor Castle. This isolated outpost served as a way station for people traveling across the Arizona Strip, that part of Arizona separated from the rest of the state by the Grand Canyon. It also served as a refuge for polygamist wives during the 1880s and 1890s. The LDS church lost ownership of the property through penalties involved in the federal Edmunds-Tucker Act of 1887.
Although their way of life was greatly impacted by Mormon settlement, the Paiute Indians continued to live in the area and by 1907 the Kaibab Paiute Indian Reservation was establisheSunset Crater is a volcanic cinder cone located north of Flagstaff in U.S. State of Arizona. The crater is within the Sunset Crater Volcano National Monument.
Sunset Crater is the youngest in a string of volcanoes (the San Francisco volcanic field) that is related to the nearby San Francisco Peaks.
The eruptions forming the 340-meter-high cone (1,120 ft) were initially considered from tree-ring dating to have begun between the growing seasons of 1064–1065 AD; however, more recent paleomagnetic evidence places the onset of the eruption sometime between about 1080 and 1150 AD. The largest vent of the eruption, Sunset Crater itself, was the source of the Bonito and Kana-a lava flows that extended about 2.5 kilometers (1.6 mi) NW and 9.6 kilometers (6 mi) NE, respectively. Additional vents along a 10-kilometer-long fissure (6.2 mi) extending SE produced small spatter ramparts and a 6.4-kilometer-long lava flow (4 mi) to the east. The Sunset Crater eruption produced a blanket of ash and lapilli covering an area of more than 2,100 square kilometers (810 sq mi) and forced the abandonment of settlements of the indigenous Sinagua Indians.  The volcano has partially revegetated, with pines and wildflowers. The crater has given its name to the Sunset Crater Beardtongue (Penstemon clutei).d, surrounding the privately owned Pipe Spring ranch.
In 1923 the Pipe Spring ranch was purchased and set aside as a national monument, a memorial of western pioneer life.. Today the Pipe Spring National Monument, Kaibab Band of Paiute Indians Visitor Center, and Museum explain the human history of the area over time. Daily tours of Winsor Castle, summer "living history" demonstrations, an orchard and garden, and a half-mile trail offer a glimpse of American Indian and pioneer life in the Old West. The Paiute tribe runs a small adjoining campground.


Sunset Crater National Monument
Sunset Crater is a volcanic cinder cone located north of Flagstaff in U.S. State of Arizona. The crater is within the Sunset Crater Volcano National Monument.
Sunset Crater is the youngest in a string of volcanoes (the San Francisco volcanic field) that is related to the nearby San Francisco Peaks.
The eruptions forming the 340-meter-high cone (1,120 ft) were initially considered from tree-ring dating to have begun between the growing seasons of 1064–1065 AD; however, more recent paleomagnetic evidence places the onset of the eruption sometime between about 1080 and 1150 AD. The largest vent of the eruption, Sunset Crater itself, was the source of the Bonito and Kana-a lava flows that extended about 2.5 kilometers (1.6 mi) NW and 9.6 kilometers (6 mi) NE, respectively. Additional vents along a 10-kilometer-long fissure (6.2 mi) extending SE produced small spatter ramparts and a 6.4-kilometer-long lava flow (4 mi) to the east. The Sunset Crater eruption produced a blanket of ash and lapilli covering an area of more than 2,100 square kilometers (810 sq mi) and forced the abandonment of settlements of the indigenous Sinagua Indians.  The volcano has partially revegetated, with pines and wildflowers. The crater has given its name to the Sunset Crater Beardtongue (Penstemon clutei).
Sunset Crater Volcano National Monument is a U.S. National Monument in the north-central part of the U.S. state of Arizona, intended to protect Sunset Crater, a cinder cone that is part of the San Francisco Volcanic Field.[7] It is maintained by the National Park Service in close conjunction with nearby Wupatki National Monument. In the late 1920s, a Hollywood film company attempted to detonate large quantities of explosives inside Sunset Crater in order to simulate a volcanic eruption. Public outcry over this plan led in part to the proclamation of Sunset Crater Volcano National Monument by President Herbert Hoover in 1930.