Mesa Verde National Park is a national park of the United States and UNESCO World Heritage Site located in Montezuma County, Colorado, and the only World Heritage Site in Colorado. The park protects some of the best-preserved Ancestral Puebloan ancestral sites in the United States.
Established by Congress and President Theodore Roosevelt in 1906, the park occupies near the Four Corners region of the American Southwest. With more than 5,000 sites, including 600 cliff dwellings, it is the largest archaeological preserve in the United States. Mesa Verde (Spanish for "green table", or more specifically "green table mountain") is best known for structures such as Cliff Palace, one of the largest cliff dwellings in North America.
Starting BCE Mesa Verde was seasonally inhabited by a group of nomadic Paleo-Indians known as the Foothills Mountain Complex. The variety of projectile points found in the region indicates they were influenced by surrounding areas, including the Great Basin, the San Juan Basin, and the Rio Grande Valley. Later, Archaic people established semi-permanent rock shelters in and around the mesa. By 1000 BCE, the Basketmaker culture emerged from the local Archaic population, and by 750 CE the Ancestral Puebloans had developed from the Basketmaker culture.
The Pueblo people survived using a combination of hunting, gathering, and subsistence farming of crops such as corn, beans, and squash (the "Three Sisters"). They built the mesa's first pueblos sometime after 650, and by the end of the 12th century, they began to construct the massive cliff dwellings for which the park is best known. By 1285, following a period of social and environmental instability driven by a series of severe and prolonged droughts, they migrated south to locations in Arizona and New Mexico, including the Rio Chama, the Albuquerque Basin, the Pajarito Plateau, and the foot of the Sangre de Cristo Mountains.
Inhabitants
Paleo-Indians
The first occupants of the Mesa Verde region, which spans from southeastern Utah to northwestern New Mexico, were nomadic Paleo-Indians who arrived in the area BCE.: Paleo-Indians; : southeastern Utah to northwestern New Mexico. They followed herds of big game and camped near rivers and streams, many of which dried up as the glaciers that once covered parts of the San Juan Mountains receded. The earliest Paleo-Indians were the Clovis culture and Folsom tradition, defined largely by how they fashioned projectile points. Although they left evidence of their presence throughout the region, there is little indication that they lived in central Mesa Verde during this time.
After 9600 BCE, the area's environment grew warmer and drier, a change that brought to central Mesa Verde pine forests and the animals that thrive in them. Paleo-Indians began inhabiting the mesa in increasing numbers , though it is unclear whether they were seasonal occupants or year-round residents. Development of the atlatl during this period made it easier for them to hunt smaller game, a crucial advance at a time when most of the region's big game had disappeared from the landscape.
Archaic
6000 BCE marks the beginning of the Archaic period in North America. Archaeologists differ as to the origin of the Mesa Verde Archaic population; some believe they developed exclusively from local Paleo-Indians, called the Foothills Mountain Complex, but others suggest that the variety of projectile points found in Mesa Verde indicates influence from surrounding areas, including the Great Basin, the San Juan Basin, and the Rio Grande Valley. The Archaic people probably developed locally, but were also influenced by contact, trade, and intermarriage with immigrants from these outlying areas.
The early Archaic people living near Mesa Verde utilized the atlatl and harvested a wider variety of plants and animals than the Paleo-Indians had while retaining their primarily nomadic lifestyle. They inhabited the outlying areas of the Mesa Verde region, but also the mountains, mesa tops, and canyons, where they created rock shelters and rock art, and left evidence of animal processing and chert knapping. Environmental stability during the period drove population expansion and migration. Major warming and drying from 5000 to 2500 might have led middle Archaic people to seek the cooler climate of Mesa Verde, whose higher elevation brought increased snowpack that, when coupled with spring rains, provided relatively plentiful amounts of water.
By the late Archaic, more people were living in semi-permanent rock shelters that preserved perishable goods such as baskets, sandals, and mats. They started to make a variety of twig figurines that usually resembled sheep or deer. The late Archaic is marked by increased trade in exotic materials such as obsidian and turquoise. Marine shells and abalone from the Pacific coast made their way to Mesa Verde from Arizona, and the Archaic people worked them into necklaces and pendants. Rock art flourished, and people lived in rudimentary houses made of mud and wood. Their early attempts at plant domestication eventually developed into the sustained agriculture that marked the end of the Archaic period, .
Basketmaker culture
With the introduction of corn to the Mesa Verde region BCE and the trend away from nomadism toward permanent pithouse settlements, the Archaic Puebloan transitioned into what archaeologists call the Basketmaker culture. Basketmaker II people are characterized by their combination of foraging and farming skills, use of the atlatl, and creation of finely woven baskets in the absence of earthen pottery. By 300, corn had become the preeminent staple of the Basketmaker II people's diet, which relied less and less on wild food sources and more on domesticated crops.
In addition to the fine basketry for which they were named, Basketmaker II people fashioned a variety of household items from plant and animal materials, including sandals, robes, pouches, mats, and blankets. They also made clay pipes and gaming pieces. Basketmaker men were relatively short and muscular, averaging less than tall. Their skeletal remains reveal signs of hard labor and extensive travel, including degenerative joint disease, healed fractures, and moderate anemia associated with iron deficiency. They buried their dead near or amongst their settlements, and often included luxury items as gifts, which might indicate differences in relative social status. Basketmaker II people are also known for their distinctive rock art, which can be found throughout Mesa Verde. They depicted animals and people, in both abstract and realistic forms, in single works and more elaborate panels. A common subject was the hunchbacked flute player that the Hopi call Kokopelli.
By 500 CE, atlatls were being supplanted by the bow and arrow and baskets by pottery, marking the end of the Basketmaker II Era and the beginning of the Basketmaker III Era.: end of Basketmaker II; beginning of Basketmaker III. Ceramic vessels were a major improvement over pitch-lined baskets, gourds, and animal hide containers, which had been the primary water storage containers in the region. Pottery also protected seeds against mold, insects, and rodents. By 600, Ancestral Pueblo People were using clay pots to cook soups and stews. Year-round settlements first appear around this time. The population of the San Juan Basin increased markedly after 575, when there were very few Basketmaker III sites in Mesa Verde; by the early 7th century, there were many such sites in the mesa. For the next 150 years, villages typically consisted of small groups of one to three residences. The population of Mesa Verde was approximately 1,000 to 1,500 people.
Beans and new varieties of corn were introduced to the region . By 775, some settlements had grown to accommodate more than one hundred people; the construction of large, above-ground storage buildings began around this time. Basketmakers endeavored to store enough food for their family for one year, but also retained residential mobility so they could quickly relocate their dwellings in the event of resource depletion or consistently inadequate crop yields. By the end of the 8th century, the smaller hamlets, which were typically occupied for ten to forty years, had been supplanted by larger ones that saw continuous occupation for as many as two generations. Basketmaker III people established a tradition of holding large ceremonial gatherings near community pit structures.
Ancestral Puebloans
Pueblo I: 750 to 900
750 marks the end of the Basketmaker III Era and the beginning of the Pueblo I period. The transition is characterized by major changes in the design and construction of buildings and the organization of household activities. Pueblo I people doubled their capacity for food storage from one year to two and built interconnected, year-round residences called pueblos. Many household activities that had previously been reserved for subterranean pit-houses were moved to these above-ground dwellings. This altered the function of pit-houses from all-purpose spaces to ones used primarily for community ceremonies, although they continued to house large extended families, particularly during winter months. During the late 8th century, Pueblo people began building square pit structures that archaeologists call protokivas. They were typically deep and wide.
The first pueblos appeared at Mesa Verde sometime after 650; by 850 more than half of Pueblo people lived in them. As local populations grew, Puebloans found it difficult to survive on hunting, foraging, and gardening, which made them increasingly reliant on domesticated corn. This shift from semi-nomadism to a "sedentary and communal way of life changed ancestral Pueblo society forever". Within a generation the average number of households in these settlements grew from 1–3 to 15–20, with average populations of two hundred people. Population density increased dramatically, with as many as a dozen families occupying roughly the same space that had formerly housed two. This brought increased security against raids and encouraged greater cooperation amongst residents. It also facilitated trade and intermarriage between clans, and by the late 8th century, as Mesa Verde's population was being augmented by settlers from the south, four distinct cultural groups occupied the same villages.
Large Pueblo I settlements laid claim to the resources found within . They were typically organized in groups of at least three and spaced about apart. By 860, there were approximately 8,000 people living in Mesa Verde. Within the plazas of larger villages, the Pueblo I people dug massive pit structures of that became central gathering places. These structures represent early architectural expressions of what would eventually develop into the Pueblo II Era great houses of Chaco Canyon. Despite robust growth during the early and mid-9th century, unpredictable rainfall and periodic drought led to a dramatic reversal of settlement trends in the area. Many late Pueblo I villages were abandoned after less than forty years of occupation, and by 880 Mesa Verde's population was in steady decline. The beginning of the 10th century saw widespread depopulation of the region, as people emigrated south of the San Juan River to Chaco Canyon in search of reliable rains for farming. As Pueblo people migrated south, to where many of their ancestors had emigrated two hundred years before, the influence of Chaco Canyon grew, and by 950 Chaco had supplanted Mesa Verde as the region's cultural center.
Pueblo II: 900 to 1150