Chimney Rock Pueblo (Chimney Rock National Monument)
Chimney Rock · Chimney Rock Pueblo · Great House Pueblo at Chimney Rock · Piedra Parada
Chaco Bonito (Late Pueblo II)·Chaco (highland Ancestral Pueblo)·🇺🇸 Colorado, Archuleta County – Piedra River high mesa, San Juan Mountains, United States
About
About Chimney Rock Pueblo (Chimney Rock National Monument)
Perched astronomical great-house pueblo (c.1075–1125 CE, Chacoan) on 2,280 m ridge between two 30-m chimney pinnacles — southernmost Chaco outlier controlling Upper San Juan timber/ game highland. Frank Eddy & USFS 1970– excavations found: 2 great-house pueblos (Chimney Rock Great House 36 rooms on ridge crest, Companion Rock house), great kiva 13 m, 90 small house sites, and lunar standstill alignment: Major Lunar Standstill every 18.6 years moon rises between chimneys as seen from great house — arguably Chacoan lunar observatory (Malville). National Monument 2012.
Why it mattersChimney Rock lunar standstill alignment — most cited Chacoan astronomy; highest Chaco outlier 2280 m timber economy.
Open questions
Mysteries & theories
Mysteries
- 01Is 18.6-year lunar alignment intentional Chaco prediction — Malville vs Zeilik debate?
- 02Why build on knife-edge ridge — defence or theatre
Theories
- 01Chimney Rock as Chacoan 'high temple' — Eddy's astronomical priest model
Theories are interpretations, not findings. The seal above tells you how much scholarly weight the place carries.
History
How it came to be
- Built
- c.1076 CE great house (tree-ring); kiva 1093 CE
- Period
- Chaco Bonito (Late Pueblo II)
- Culture
- Chaco (highland Ancestral Pueblo)
- Builders
- Chacoan highland colonists and local Piedra phase
- Purpose
- Highland timber source and lunar astronomical shrine
- Abandoned
- c.1125 Chacoan withdrawal; late Piedra 1200
- Rediscovered
- 1877 Holmes Mesa Verde survey notes; 1921 Jeancon; 1970 Eddy USFS project
- Excavation
- Partially excavated
1970
Eddy USFS-Colorado University highland project
c.1090
Lunar standstill alignment obsidian? — Eddy's thesis
2012
Obama proclaims Chimney Rock National Monument
On the ground
Structures & features
37.1980° N · 107.3040° W · 2280 m · 3 mapped features
Chimney Rock Great House
great house36-room great house on knife ridge between spires
37.1981° N · 107.3041° WGreat kiva (lower mesa)
great kiva13 m great kiva with lunar sightline
37.1979° N · 107.3039° WChimney spires lunar sightline
alignmentTwo 30 m pinnacles 200 m apart — lunar standstill gap
37.1980° N · 107.3040° W
Gallery