Chaco Canyon, located in northwest New Mexico, is perhaps the only site in the world constructed in an elaborate pattern that mirrors the yearly cycle of the sun and the 19-year cycle of the moon. How did an ancient civilization, with no known written language, arrange its buildings into a virtual celestial calendar, spanning an area roughly the size of Ireland?
| Actor | Role |
|---|---|
 Robert RedfordNarrator (voice) | Narrator (voice) |
| PPaul PinoSelf - Council Member, Laguna Pueblo | Self - Council Member, Laguna Pueblo |
| JJohn SteinSelf - Archaeologist | Self - Archaeologist |
| MMike MarshallSelf - Archaeologist | Self - Archaeologist |
| RRich FriedmanSelf - Geologist | Self - Geologist |
| AAnna SofaerSelf - Archaeoastronomer | Self - Archaeoastronomer |
| PPhil TuwaletstiwaSelf - Geodesist, Hopi Tribe | Self - Geodesist, Hopi Tribe |
| EEdmund J. LaddSelf - Archaeologist, Zuni | Self - Archaeologist, Zuni |
| DDave WarrenSelf - Ethnohistorian, Santa Clara Pueblo | Self - Ethnohistorian, Santa Clara Pueblo |
| PPetuuche GilbertSelf - Historian, Acoma Pueblo | Self - Historian, Acoma Pueblo |