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Updated:Apr 23, 2026
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Chaco Canyon Architectural and Community Development (c. 850–1150 CE)

Chaco Canyon Architectural and Community Development (c. 850–1150 CE)

  1. Pueblo Bonito construction begins at Chaco

    Labels: Pueblo Bonito, Chaco Canyon
  2. Bonito Phase great-house boom accelerates

    Labels: Bonito Phase, Chaco communities
  3. Pueblo Alto founded on the north mesa

    Labels: Pueblo Alto, North Mesa
  4. Pueblo del Arroyo construction starts near Chaco Wash

    Labels: Pueblo del, Chaco Wash
  5. Chetro Ketl largely completed

    Labels: Chetro Ketl, Chaco construction
  6. Pueblo Bonito’s long building program continues

    Labels: Pueblo Bonito, Chaco investment
  7. Severe mid-12th-century drought begins affecting the region

    Labels: Mid-12th-century drought, Paleoclimate
  8. Major Chacoan emigration and system reorganization

    Labels: Chaco emigration, System reorganization
  9. Pueblo Bonito construction ends around 1150

    Labels: Pueblo Bonito, Construction end