built larger pueblos, or villages, on top of the pit-houses starting about AD 1090. Lowry Pueblo had just a few rooms and 2 kivas in 1090 and the village was expanded two times about 1103 and 1120 until it had 40 rooms, 8 kivas and one great kiva. Like their ancient neighbors at Hovenweep National Monument and Mesa Verde National Park, the Lowry Pueblo dwellers were farmers and hunters. They grew beans, corn and squash and raised turkeys. They also made and decorated pottery. Notable sites At least 8,500 distinct structures have been identified in the monument, and the density of archeological remains is the highest of any region in the United States. The vast majority of stone structures in the national monument are from the Ancient Puebloans era. More than 30,000 sites likely exist in the Monument, in some places more than 200 sites per square mile. After building basic pit style structures at first, the Puebloans later built villages with cliff dwellings. Archaeological ruins also include Sweat lodges, kivas, shrines and petroglyphs. Reservoirs with stone and earthen dams, including spillways and also numerous check dams,Canyons of the Ancients: Background. Bureau of Land Management. Retrieved 9-24-2011. built in case of flash floods. Stone towers which may have been lookout or sentry posts, are found scattered throughout the monument. Migration Unlike other Ancient Pueblo site abandonment, it appears that the people of the Canyons of the Ancients left the sites much earlier than their neighbors, some time in the mid-12th century. Some of the artifacts found from the site show a connection to the Chacoan culture, while others are similar to those of the Mesa Verde dwellers. Other Ancient Pueblo people from the area migrated south to Arizona and New Mexico, ancestors to modern pueblo people such as the Hopi and Zuni. Modern Pueblo people are located on reservations primarily in New Mexico, but some in Arizona. The 60,000 people's pueblos and reservations reside in three geographic areas: along the upper Rio Grande in New Mexico, such as Taos Pueblo southern New Mexican Zuni, Acoma, Laguna and Isleta pueblos and reservations Arizona Hopi. Post-Pueblo Native American tribes: 14th to 18th century After 1300, hunter-gatherers, ancestors of the Ute and Navajo, moved into the southwestern Colorado and southeastern Utah and came to inhabit the region. The ancestors to the Navajo were one of the tribes of the southern division of the