The Ancestral Puebloans, also known as Ancestral Pueblo peoples or the Basketmaker-Pueblo culture, were an ancient Native American culture of Pueblo peoples spanning the present-day Four Corners region of the United States, comprising southeastern Utah, northeastern Arizona, northwestern New Mexico, and southwestern Colorado. They are believed to have developed, at least in part, from the Oshara tradition, which developed from the Picosa culture.

The Ancestral Puebloans lived in a range of structures that included small family pit houses, larger structures to house clans, grand pueblos, and cliff-sited dwellings for defense. They had a complex network linking hundreds of communities and population centers across the Colorado Plateau. They held a distinct knowledge of celestial sciences that found form in their architecture. The kiva, a congregational space that was used mostly for ceremonies, was an integral part of the community structure.

Archaeologists continue to debate when this distinct culture emerged. The current agreement, based on terminology defined by the Pecos Classification, suggests their emergence around the 12th century BCE, during the archaeologically designated Early Basketmaker II Era. Beginning with the earliest explorations and excavations, researchers identified Ancestral Puebloans as the forerunners of contemporary Pueblo peoples. Three UNESCO World Heritage Sites located in the United States are credited to the Pueblos: Mesa Verde National Park, Chaco Culture National Historical Park and Taos Pueblo.

Ancestral Puebloans
National Park Service · Public domain via Wikimedia Commons

Etymology

Pueblo, which means "village" and "people" in Spanish, was a term originating with the Spanish explorers who used it to refer to the people's particular style of dwelling.

Hopi people use the term Hisatsinom, meaning "ancient people", to describe the Ancestral Puebloans.

The Navajo people, who now reside in parts of former Pueblo territory, referred to the ancient people as Anaasází in their Diné language, an exonym meaning "ancestors of our enemies", referring to their competition with the Pueblo peoples. The Navajo now use the term in the sense of referring to "ancient people" or "primitive ones", i.e., savages or barbarians, whereas others ascribe the meaning of Anasazi to "the older ones who are different from our people"; (lit. Ana = "different from us" + asaza = "the old ones"). In the twentieth century, the people and their archaeological culture were often referred to by the Diné exonym. Alfred V. Kidder, who mistakenly thought it was Diné for old people, used the term in the 1927 Pecos Classification system. Contemporary Pueblos view this term as derogatory and object to the use of the term. Modern descendants of this culture often choose to use the term Ancestral Pueblo peoples. Archaeologist Linda S. Cordell discussed the word's etymology and use:

Ancestral Puebloans
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The name "Anasazi" has come to mean "ancient people," although the word itself is Navajo, meaning "enemy ancestors." [The Navajo word is anaasází (< anaa- "enemy", sází "ancestor").] It is unfortunate that a non-Pueblo word has come to stand for a tradition that is certainly ancestral Pueblo. The term was first applied to ruins of the Mesa Verde by Richard Wetherill, a rancher and trader who, in 1888–1889, was the first Anglo-American to explore the sites in that area. Wetherill knew and worked with Navajos and understood what the word meant. The name was further sanctioned in archaeology when it was adopted by Alfred V. Kidder, the acknowledged dean of Southwestern Archaeology. Kidder felt that it was less cumbersome than a more technical term he might have used. Subsequently some archaeologists who would try to change the term have worried that because the Pueblos speak different languages, there are different words for "ancestor," and using one might be offensive to people speaking other languages.

Others have objected to Cordell's definition of the name "Anasazi", saying that its true connotation means in the Navajo language "those that do things differently". In yet another account, the term Anasazi originated from a Navajo adoption of a Ute word that literally means "ancient enemy" or "primitive enemy", but was used by the Navajo to mean "savage" or "barbarian", hence the Pueblos' rejection of the term.

Navajo historian Wally Brown stated that the Navajo word "Anasazi" never referred to all Ancestral Puebloans at all, but to a specific group who, according to legend, once lived in Chaco Canyon and perpetrated slave raids on their neighbours, and that the use of the word to refer to Ancestral Puebloans in general had been a mistake by anthropologists. He stated that the slave-raiding "Anasazi" were not the ancestors of the current Puebloans and that he did not believe that they had left any descendants.

Ancestral Puebloans
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Geography

The Ancestral Puebloans were one of four major prehistoric archaeological traditions recognized in the American Southwest, also known as Oasisamerica. The others are the Mogollon, Hohokam, and Patayan. In relation to neighboring cultures, the Ancestral Puebloans occupied the northeast quadrant of the area. The Ancestral Pueblo homeland centers on the Colorado Plateau, but extends from central New Mexico on the east to southern Nevada on the west.

Areas of southern Nevada, Utah, and Colorado form a loose northern boundary, while the southern edge is defined by the Colorado and Little Colorado Rivers in Arizona and the Rio Puerco and Rio Grande in New Mexico. Structures and other evidence of Ancestral Puebloan culture have been found extending east onto the American Great Plains, in areas near the Cimarron and Pecos Rivers and in the Galisteo Basin.

Terrain and resources within this large region vary greatly. The plateau regions have high elevations ranging from 4,500 to 8,500 feet (1,400 to 2,600 m). Extensive horizontal mesas are capped by sedimentary formations and support woodlands of junipers, pinyon, and ponderosa pines, each favoring different elevations. Wind and water erosion have created steep-walled canyons, and sculpted windows and bridges out of the sandstone landscape. In areas where resistant strata (sedimentary rock layers), such as sandstone or limestone, overlie more easily eroded strata such as shale, rock overhangs formed. The Ancestral Puebloans favored building under such overhangs for shelters and defensive building sites.

Ancestral Puebloans
J.R. Gill, USGS · Public domain via Wikimedia Commons

All areas of the Ancestral Puebloan homeland suffered from periods of drought and erosion from wind and water. Summer rains could be unreliable and produced destructive thunderstorms. While the amount of winter snowfall varied greatly, the Ancestral Puebloans depended on the snow for most of their water. Snow melt allowed the germination of seeds, both wild and cultivated, in the spring.

Where sandstone layers overlay shale, snow melt could accumulate and create seeps and springs, which the Ancestral Puebloans used as water sources. Snow also fed the smaller, more predictable tributaries, such as the Chinle, Animas, Jemez, and Taos Rivers. The larger rivers were less directly important to the ancient culture, as smaller streams were more easily diverted or controlled for irrigation.

Cultural characteristics

The Ancestral Puebloan culture is perhaps best known for the stone and earth dwellings its people built along cliff walls, particularly during the Pueblo II and Pueblo III eras, from about 900 to 1350 CE in total. The best-preserved examples of the stone dwellings are now protected within United States' national parks, such as Navajo National Monument, Chaco Culture National Historical Park, Mesa Verde National Park, Canyons of the Ancients National Monument, Aztec Ruins National Monument, Bandelier National Monument, Hovenweep National Monument, and Canyon de Chelly National Monument.

Ancestral Puebloans
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These villages, called pueblos by Spanish colonists, were accessible only by rope or through rock climbing. These astonishing building achievements had modest beginnings. The first Ancestral Puebloan homes and villages were based on the pit-house, a common feature in the Basketmaker periods.

Ancestral Puebloans are also known for their pottery. Local plainware pottery used for cooking or storage was unpainted gray, either smooth or textured. Pottery used for more formal purposes was often more richly adorned. In the northern portion of the Ancestral Pueblo lands, from about 500 to 1300 CE, the pottery styles commonly had black-painted designs on white or light gray backgrounds. Decoration is characterized by fine hatching, and contrasting colors are produced by the use of mineral-based paint on a chalky background. South of the Anasazi territory, in Mogollon settlements, pottery was more often hand-coiled, scraped, and polished, with red to brown coloring.

Certain tall cylinders were likely ceremonial vessels, while narrow-necked jars, called ollas, were often used for liquids. Pottery from the southern regions of Ancestral Pueblo lands has bold, black-line decoration and the use of carbon-based colorants. In northern New Mexico, the local black-on-white pottery tradition, the Rio Grande white wares, continued well after 1300 CE.

Ancestral Puebloans
National Park Service (United States) · Public domain via Wikimedia Commons

Changes in pottery composition, structure, and decoration are signals of social change in the archaeological record. This is particularly true as the peoples of the American Southwest began to leave their historic homes and migrate south. According to archaeologists Patricia Crown and Steadman Upham, the appearance of the bright colors on Salado Polychromes in the 14th century may reflect religious or political alliances on a regional level. Late 14th- and 15th-century pottery from central Arizona, widely traded in the region, has colors and designs which may derive from earlier ware by both Ancestral Pueblo and Mogollon peoples.

The Ancestral Puebloans also excelled at rock art, which included carved petroglyphs and painted pictographs. Ancestral Pueblo peoples painted Barrier Canyon Style pictographs in locations where the images were protected from the sun yet visible to the public. Designs include human-like forms. The so-called "Holy Ghost panel" in the Horseshoe Canyon is considered to be one of the earliest uses of graphical perspective where the largest figure appears to take on a three-dimensional representation.

Recent archaeological evidence has established that in at least one great house, Pueblo Bonito, the elite family whose burials associate them with the site practiced matrilineal succession. Room 33 in Pueblo Bonito, the richest burial ever excavated in the Southwest, served as a crypt for one powerful lineage, traced through the female line, for approximately 330 years. While other Ancestral Pueblo burials have not yet been subjected to the same archaeogenomic testing, the survival of matrilineal descent among contemporary Pueblo peoples suggests that this may have been a widespread practice among Ancestral Puebloans.

Architecture

Ancestral Pueblo people in the North American Southwest crafted a unique architecture with planned community spaces. Population centers such as Chaco Canyon (outside Crownpoint, New Mexico), Mesa Verde (near Cortez, Colorado), and Bandelier National Monument (near Los Alamos, New Mexico) have brought renown to the Ancestral Pueblo peoples. They consisted of apartment complexes and structures made of stone, adobe mud, and other local material, or were carved into canyon walls. Developed within these cultures, the people also adopted design details from other cultures as far away as contemporary Mexico.

These buildings were usually multistoried and multipurposed, and surrounded by open plazas and viewsheds. Hundreds to thousands of people lived in these communities. These complexes hosted cultural and civic events and infrastructure that supported a vast outlying region hundreds of miles away linked by transportation roadways.

Built well before 1492 CE, these towns and villages were located in defensive positions, for example on high, steep mesas such as at Mesa Verde or present-day Acoma Pueblo, called the "Sky City", in New Mexico. Before 900 CE and progressing past the 13th century, the population complexes were major cultural centers. In Chaco Canyon, Chacoan developers quarried sandstone blocks and hauled timber from great distances, assembling 15 major complexes. These ranked as the largest buildings in North America until the late 19th century.

Evidence of archaeoastronomy at Chaco has been proposed, with the Sun Dagger petroglyph at Fajada Butte a popular example. Many Chacoan buildings may have been aligned to capture the solar and lunar cycles, requiring generations of astronomical observations and centuries of skillfully coordinated construction. The Chacoans abandoned the canyon, probably due to climate change beginning with a 50-year drought starting in 1130.

Great houses

Immense complexes known as "great houses" embodied worship at Chaco. Archaeologists have found musical instruments, jewelry, ceramics, and ceremonial items, indicating people in the Great Houses were elite, wealthier families. They hosted indoor burials, where gifts were interred with the dead, often including bowls of food and turquoise beads.

Over centuries, architectural forms evolved but the complexes kept some core traits, such as their size. They averaged more than 200 rooms each, and some had 700 rooms. Rooms were very large, with higher ceilings than Ancestral Pueblo buildings of earlier periods. They were well-planned: vast sections were built in a single stage.

Most houses faced south. Plazas were almost always surrounded by buildings of sealed-off rooms or high walls. There were often four or five stories, with single-story rooms facing the plaza; room blocks were terraced to allow the tallest sections to compose the pueblo's rear edifice. Rooms were often organized into suites, with front rooms larger than rear, interior, and storage rooms or areas.

Ceremonial structures known as kivas were built in proportion to the number of rooms in a pueblo. A small kiva was built for roughly every 29 rooms. Nine complexes each had a Great Kiva, up to 63 feet (19 m) in diameter. T-shaped doorways and stone lintels marked all Chacoan kivas.

Although simple and compound walls were often used, great houses usually had core-and-veneer walls: rubble filled the gap between parallel load-bearing walls of dressed, flat sandstone blocks bound in clay mortar. Walls were covered in a veneer of small sandstone pieces, which were pressed into a layer of binding mud. These surfacing stones were often arranged in distinctive patterns.

The Chacoan structures together required the wood of 200,000 conifer trees, mostly hauled – on foot – from mountain ranges up to 70 miles (110 km) away.

Ceremonial infrastructure

One of the most notable aspects of Ancestral Puebloan infrastructure is the Chaco Road at Chaco Canyon, a system of roads radiating from many great house sites such as Pueblo Bonito, Chetro Ketl, and Una Vida. They led toward small outlier sites and natural features in the canyon and outside.

Through satellite images and ground investigations, archaeologists have found eight main roads that together run for more than 180 miles (300 km), and are more than 30 feet (10 m) wide. These were built by excavating into a smooth, leveled surface in the bedrock or removing vegetation and soil. Large ramps and stairways in the cliff rock connect the roads above the canyon to sites at the bottom.

The largest roads, built at the same time as many of the great houses (1000 to 1125 CE), are: the Great North Road, the South Road, the Coyote Canyon Road, the Chacra Face Road, Ahshislepah Road, Mexican Springs Road, the West Road, and the shorter Pintado-Chaco Road. Simple structures like berms and walls are sometimes aligned along the roads. Some tracts of the roads lead to natural features such as springs, lakes, mountain tops, and pinnacles.

Great North Road

The longest and best-known of these roads is the Great North Road, which originates from different routes close to Pueblo Bonito and Chetro Ketl. These roads converge at Pueblo Alto and from there lead north beyond the canyon limits. Along roadways were only small, isolated structures.

Archaeological interpretations of the Chaco road system are divided between an economic purpose and a symbolic, ideological or religious role.

The system was discovered in the late 19th century and excavated in the 1970s. By the late 20th century, aerial and satellite photographs helped in the study. Archaeologists suggested that the road's main purpose was to transport local and exotic goods to and from the canyon. The economic purpose of the Chaco road system is shown by the presence of luxury items at Pueblo Bonito and elsewhere in the canyon. Items such as macaws, turquoise and seashells, which are not part of this environment, and imported vessels distinguished by design, prove that the Chaco traded with distant regions. The widespread use of timber in Chacoan constructions required a large system of easy transportation, as timber was not locally available. Analysis of strontium isotopes shows that much of the timber came from distant mountain ranges.

Cliff communities

Throughout the southwest Ancestral Puebloan region, the inhabitants built complexes in shallow caves and under rock overhangs in canyon walls. Unlike earlier structures and villages atop mesas, this was a regional 13th-century trend of gathering the growing populations into close, defensible quarters. There were buildings for housing, defense, and storage. These were built mostly of blocks of hard sandstone, held together and plastered with adobe mortar. Constructions had many similarities, but unique forms due to the unique rock topography.

The best-known site is at Mesa Verde, with a large number of well-preserved cliff dwellings. This area included common Pueblo architectural forms, such as kivas, towers, and pit-houses, but the space restrictions of these alcoves resulted in far denser populations. Mug House, a typical cliff dwelling of the period, was home to around 100 people who shared 94 small rooms and eight kivas, built right up against each other and sharing many walls. Builders maximized space use and no area was off-limits.

Not all the people in the region lived in cliff dwellings; many colonized the canyon rims and slopes in multifamily structures that grew to unprecedented size as populations swelled. Decorative motifs for these sandstone/mortar structures, both cliff dwellings and not, included T-shaped windows and doors. This has been taken by some archaeologists, such as Stephen Lekson (1999), as evidence of the continuation of the Chaco Canyon elite system, which had seemingly collapsed a century earlier. Other researchers instead explain these motifs as part a wider Pueblo style or religion.

History

Origins

During the period from 700 to 1130 CE (Pueblo I and II Eras), the population grew fast due to consistent and regular rainfall which supported agriculture. Studies of skeletal remains show increased fertility rather than decreased mortality. However, this tenfold population increase over a few generations was probably also due to migrations of people from surrounding areas. Innovations such as pottery, food storage, and agriculture enabled this rapid growth. Over several decades, the Ancestral Puebloans culture spread across the landscape.

Ancestral Puebloan culture has been divided into three main areas or branches, based on geographical location:

Chaco Canyon (northwest New Mexico)

Kayenta (northeast Arizona), and

Northern San Juan (Mesa Verde and Hovenweep National Monument) (southwest Colorado and southeastern Utah)

DNA evidence confirms the ancestors of the inhabitants of Picuris Pueblo once lived in Chaco Canyon, now a UNESCO World Heritage Site.

Modern Pueblo oral traditions hold that the Ancestral Puebloans originated from sipapu, where they emerged from the underworld. For unknown ages, they were led by chiefs and guided by spirits as they completed vast migrations throughout the continent of North America. They settled first in the Ancestral Puebloan areas for a few hundred years before moving to their present locations.

Migration from the homeland

The Ancestral Puebloans left their established homes in the 12th and 13th centuries. The main reason is unclear. Factors discussed include global or regional climate change, prolonged drought, environmental degradation such as cyclical periods of topsoil erosion or deforestation, hostility from new arrivals, religious or cultural change, and influence from Mesoamerican cultures. Many of these possibilities are supported by archaeological evidence.

Current scholarly consensus is that Ancestral Puebloans responded to pressure from Numic-speaking peoples moving onto the Colorado Plateau, as well as climate change that resulted in agricultural failures. The archaeological record indicates that for Ancestral Puebloans to adapt to climatic change by changing residences and locations was not unusual. Early Pueblo I Era sites may have housed up to 600 individuals in a few separate but closely spaced settlement clusters. However, they were generally occupied for 30 years or less. Archaeologist Timothy A. Kohler excavated large Pueblo I sites near Dolores, Colorado, and discovered that they were established during periods of above-average rainfall. This allowed crops to be grown without requiring irrigation. At the same time, nearby areas that suffered significantly drier patterns were abandoned.