smaller game and/or bow and arrow technology. Sites include Colorado Millennial Site, Franktown Cave, LoDaisKa site, Magic Mountain site, Picture Canyon, and Roxborough State Park Archaeological District Sopris phase – dated about AD 1000-1250 was first found in southeastern Colorado, near the present town of Trinidad. Although the culture appeared to have been greatly influenced by pueblo people, such as the Taos Pueblo and trade in the Upper Rio Grande, the Sopris culture was generally a hunter-gatherer tradition. See Trinchera Cave Archeological District Another Post-Archaic site is the Chimney Rock National Monument. Post-Archaic, Puebloan people Ancestral Pueblo peoples – ancient to protohistoric Native American culture centered on the present-day Four Corners area of the United States, comprising southern Utah, northern Arizona, northwest New Mexico, and southern Colorado. Basketmaker culture – American southwestern culture of the Ancient Pueblo People, dated about 1500 BC to AD 500, named for the large number of baskets found at archaeological sites. This group was preceded by the Archaic–Early Basketmaker Era, Durango Rock Shelters Archeology Site and followed by the Pueblo I Era. Basketmaker sites include Canyons of the Ancients National Monument, Hovenweep National Monument and Ute Mountain Ute Tribe site 5MT10525. Pueblo culture – began AD 500 with the Pueblo I Era when people lived in pueblo structures and realized an evolution in architecture, artistic expression, and water conservation. Pueblo eras continued through to the contemporary Pueblo V Era. There are many Pueblo sites in southwestern Colorado, most notably: Canyon of the Ancients, Hovenweep National Monument, Mesa Verde National Park, Ute Mountain Ute Tribe portion of the Mesa Verde Region. Tipi ring period – a late Post-Archaic period when tipi rings were found, signifying habitation of nomadic hunters. This period continued into the protohistoric and historic periods. Evidence of the Apishapa culture disappeared after AD 1400, followed by sites with tipi rings. See Picture Canyon, which has evidence of both Apishapa and Tipi ring periods. Culture in prehistoric Colorado Paleolithic lifestyle – a hunter-gatherer distinguished by their nomadic lifestyle and use of stone tools. Pueblo culture – village life typified by the development of communities centered upon agriculture, pottery and trade. See also the cultures under the Paleo-Indian, Archaic and Post-Archaic period sections above. Art Rock art – human-made carvings or paintings markings made on natural stone, including petroglyphs and pictographs. See Cañon Pintado, Colorado Millennial Site, Dinosaur National Monument, Hawkins Preserve, Hovenweep National Monument,