The focus of one of the largest federally funded cultural resource mitigation efforts ever funded by the U.S. Bureau of Reclamation, the district has seen a wide variety of human visitation and occupation over time.

Set aside as a National Monument in 1919, this Chacoan "outlier" site with tree ring dates of AD 1163 through 1263 represents a culmination of the long sequence of Formative Period cultural development of southwestern Colorado.

Exhibiting four distinct construction periods, the site includes a multi-story Great House, a small unit pueblo, and a reservoir.  Wallace Ruin has yielded important information about prehistoric pueblo communities during the rise and fall of the Chaco culture and the cultural dynamics that preceded abandonment of the region. 

Restricted information.  The property is associated with the Great Pueblo Period of the McElmo Drainage Unit, AD 1075-1300 Multiple Property Submission. 

Occupied in the early AD 1200s, this small habitation site is a classic Prudden Unit, containing a masonry roomblock, a kiva, a tower, and a midden.

One of the largest prehistoric communities in Colorado, Mud Springs consists of at least 16 major architectural features including large roomblocks, towers, and tri-walled structures. 

The Montezuma Valley National Bank and its associated store building played a significant role in the commercial history of Cortez.  In 1908 the Montezuma Valley National Bank initiated construction of a stone building.  For over four decades (from 1915 through 1957), this building housed the town’s only bank.  Shortly after its construction, the bank continued the masonry walls and sheet metal trim onto its adjacent lot creating another commercial building that became an investment property for the bank. 

The Montezuma Valley Irrigation Company Flume No. 6 (also known as the McElmo Creek Flume) was part of a large irrigation system that aimed to deliver water to arid areas of the Montezuma Valley, and which allowed agriculture and ranching to become a major economic component in the area. 

This prehistoric community was occupied from at least AD 800 to the mid-13th century.  It may yield important discoveries relating to social history, agriculture, architecture, commerce, and community planning and development.  Although much has been backfilled to preserve and protect the resources, it contains a range of architectural styles associated with all three Pueblo periods.

This is the most extensive and well-developed example of pre-historic cliff dwellings in the United States.  The ruins trace the development of the Anasazi as they moved from the early pithouses on the mesa-tops to the large apartment complexes built in caves on the cliff walls of the canyons.