Inter-site Alignments of Prehistoric Shrines in Chaco Canyon to the Major Lunar Standstill

  • Anna Sofaer
  • Robert Weiner
  • William StoneEmail author
Conference paper
Part of the Astrophysics and Space Science Proceedings book series (ASSSP, volume 50)


In and near Chaco Canyon, New Mexico—the center of monumental ceremonial architecture of the Ancestral Puebloan culture—ancient peoples appear to have intentionally interrelated numerous small masonry structures on alignments to the major standstill moon. The structures include low-walled C-shaped, circular, and cairn configurations located on prominent positions near the tops of three mesas that form the south side of Chaco Canyon and mesas located beyond the canyon, with inter-site alignments spanning 5–15 km. Deposits of turquoise and other offerings at these small sites, and their similarity with later Puebloan features, suggest their use as shrines. Geographic information system analysis of the spatial distribution of these sites—with precise geodetic coordinates determined by the National Oceanic and Atmospheric Administration’s National Geodetic Survey—shows clustering of their interrelationships along azimuths to the rising and setting moon at its major standstill. Previous extensive investigation by the Solstice Project, with geodetic support by the National Geodetic Survey, documented the Chacoans’ commemoration of the lunar standstill cycle at the Sun Dagger petroglyph site on Fajada Butte and in the wall alignments and inter-building relationships of numerous Chaco Great Houses. Other research documented the relationship of the Chacoan Great House of Chimney Rock, Colorado, to the major lunar standstill. Our findings of the inter-shrine-site alignments to the major standstill moon provide significant evidence for a hitherto undocumented small scale of lunar astronomical expression of the Chaco culture. The placement of these shrines also appears to possibly have marked a correspondence between the topographic trajectory of Chaco Canyon and the alignment to the moon at its major standstill, suggesting a specific effort to integrate Chaco’s land formations with celestial patterns. These preliminary findings are part of a study in progress of cosmographic expressions throughout the Chacoan cultural region.


Chaco Canyon Archaeoastronomy Major lunar standstill 



We owe a special debt to NOAA’s National Geodetic Survey for supporting the precise survey of the shrine-sites of this study, following its critical support of the Solstice Project’s earlier survey of the major Chacoan Great Houses. Archaeologist Michael Marshall conducted his usual thorough and insightful surveys of the sites, describing them in the context of his extensive knowledge of such sites throughout the Chaco region. Demetrios Matsakis (US Naval Observatory) generously produced the histogram that shows the clustering of the inter-shrine alignments and calculated moon rise and set azimuth data, which are fundamental and crucial to our analysis. We also greatly appreciate the support of the National Park Service and the special attention that archaeologist Dabney Ford gave to the process of this study. Adriel Heisey conducted aerial photography of the alignments and sites of this study, in one instance flying in his ultralight plane in the freezing post-blizzard conditions that preceded the mid-winter full moon of 2007 at the major standstill moon. We also thank geodesist Phillip Tuwaletstiwa for initiating our work with the National Geodetic Survey and for encouraging this further study of the significance of the moon to the Chaco culture. The late Alfonso Ortiz, anthropologist and member of Ohkay Owingeh Pueblo, guided our early attention to the special importance of the moon in Puebloan cosmology and of the symbolic significance of elevated small sites. The late Rina Swentzell of Santa Clara Pueblo, on observing our preliminary findings, noted that the lunar inter-shrine alignments—and especially their correspondence with the canyon land formation—were “brilliant.” We thank Micah Lau for his assistance writing the Python script to calculate all possible inter-site azimuths. We were also helped and encouraged by archaeologists Ruth Van Dyke and Richard Friedman. Two anonymous reviewers helped us to make important clarification to our text and the computation of moon rise and set azimuths and encouraged us to explore further the cultural implications suggested by these findings. All three authors of this paper contributed significantly to its creation.


  1. W. Ashmore, J.A. Sabloff, Spatial orders in Maya civic plans. Lat. Am. Antiq. 13(2), 201–215 (2002)CrossRefGoogle Scholar
  2. A.F. Aveni, Skywatchers of Ancient Mexico (University of Texas Press, Austin, 1980)Google Scholar
  3. J. Broda, Political expansion and the creation of ritual landscapes: a comparative study of Inca and Aztec cosmovision. Camb. Archaeol. J. 25(1), 219–238 (2015)CrossRefGoogle Scholar
  4. F.H. Ellis, A thousand years of the Pueblo sun-moon-star calendar, in Archaeoastronomy in Pre-Columbian America, ed. By A.F. Aveni (University of Texas Press, Austin, 1975), pp. 59–88Google Scholar
  5. S.M. Fowles, The enshrined Pueblo: villagescape and cosmos in the northern Rio Grande. Am. Antiq. 74(3), 448–466 (2009)CrossRefGoogle Scholar
  6. J.P. Harrington, in 29th Annual Report of the Bureau of American Ethnology, The Ethnogeography of the Tewa Indians (Bureau of American Ethnology, Washington, 1916), pp. 29–618Google Scholar
  7. A.C. Hayes, T.C. Windes, in Papers in Honor of Florence Hawley Ellis, pp. 143–56. Papers of the Archaeological Society of New Mexico 2, ed. by T.R. Frisbie, An Anasazi shrine in Chaco Canyon (Archaeological Society of New Mexico, Santa Fe, 1975)Google Scholar
  8. R. Hively, R. Horn, A new and extended case for lunar (and solar) astronomy at the Newark earthworks. Midcont. J. Archaeol. 38(1), 83–118 (2013)CrossRefGoogle Scholar
  9. W.J. Judge, Chaco Canyon—San Juan basin, in Dynamics of Southwest Prehistory, ed. By L.S. Cordell, G.J. Gumerman (Smithsonian Institute Press, Washington, 1989), pp. 209–261Google Scholar
  10. W.J. Judge, J.M. Malville, Calendrical knowledge and ritual power, in Chimney Rock: the Ultimate Outlier, ed. By J.M. Malville (Lexington Books, Lanham 2004), pp. 151–162Google Scholar
  11. J.W. Kantner, Ancient Puebloan Southwest (Cambridge University Press, Cambridge, 2004)CrossRefGoogle Scholar
  12. S. H. Lekson (ed.), The Archaeology of Chaco Canyon: an Eleventh-Century Pueblo Regional Center (School for Advanced Research Press, Santa Fe, 2006)Google Scholar
  13. S.H. Lekson, The Chaco Meridian: One Thousand Years of Political and Religious Power in the Ancient Southwest, 2nd edn. (Rowman & Littlefield, Lanham, 2015)Google Scholar
  14. J.M. Malville, Ceremony and astronomy at Chimney Rock, in Chimney Rock: the Ultimate Outlier, ed. By J.M. Malville (Lexington Books, Lanham, 2004), pp. 131–150Google Scholar
  15. J.M. Malville, A Guide to Prehistoric Astronomy in the Southwest (Johnson Books, Boulder, 2008)Google Scholar
  16. M.P. Marshall, The Chacoan roads: a cosmological interpretation, in Anasazi Architecture and American Design, ed. By B.H. Morrow, V.B. Price (University of New Mexico Press, Albuquerque, 1997), pp. 62–74Google Scholar
  17. M.P. Marshall, A. Sofaer, Solstice Project Investigations in the Chaco District 1984 and 1985: The Technical Report. Manuscript on file, Laboratory of Anthropology, Santa Fe, New Mexico, (1988)Google Scholar
  18. M.P. Marshall, J.R. Stein, R.W. Loose, J. Novotny, Anasazi Communities of the San Juan Basin (Historic Preservation Bureau, Santa Fe, 1979)Google Scholar
  19. F.J. Mathien, in Culture and Ecology of Chaco Canyon and the San Juan Basin. Publications in Archaeology 18H, Chaco Canyon Studies (National Park Service, Santa Fe, 2005)Google Scholar
  20. S.C. McCluskey, The astronomy of the Hopi Indians. J. Hist. Astron. 8, 174–195 (1977)ADSCrossRefGoogle Scholar
  21. A. Mendez, E.L. Barnhart, C. Powell, C. Karasik, Astronomical observations from the temple of the sun. Archaeoastronomy 19, 44–73 (2005)Google Scholar
  22. A.M. Munro, J.M. Malville, Ancestors and the sun: astronomy, architecture and culture at Chaco canyon. Proc. Int. Astron. Union 7(S278), 255–264 (2011)CrossRefGoogle Scholar
  23. F.L. Nials, J.R. Stein, J.R. Roney, Chacoan Roads in the Southern Periphery: Results of Phase II of the BLM Chaco Roads Project (Bureau of Land Management, Albuquerque, 1987)Google Scholar
  24. A. Ortiz, The Tewa World: Space, Time, Being, and Becoming in a Pueblo Society (University of Chicago Press, Chicago, 1969)Google Scholar
  25. S. Ortiz, What we see: a perspective on chaco canyon and pueblo ancestry, in Chaco Canyon: a Center and Its World, ed By M. Peck (Museum of New Mexico Press, Albuquerque, 1992), pp. 65–72Google Scholar
  26. T.R. Pauketat, An Archaeology of the Cosmos: Rethinking Agency and Religion in Ancient America (Routledge, London/New York, 2013)Google Scholar
  27. T.R. Pauketat, A ray of theoretical sunshine. J. Skyscape Archaeol. 2(2), 251–254 (2016)CrossRefGoogle Scholar
  28. T.R. Pauketat, S. Alt, J. Kruchten, The emerald acropolis: elevating the moon and water in the rise of Cahokia. Antiquity 99(355), 207–222 (2017)CrossRefGoogle Scholar
  29. R.P. Powers, W.B. Gillespie, S.H. Lekson, The outlier survey: a regional view of settlement in the San Juan Basin. Reports of the Chaco Center No. 3. National Park Service, Albuquerque, (1983)Google Scholar
  30. C. Renfrew, Production and consumption in a sacred economy: the material correlates of high devotional expression at Chaco Canyon. Am. Antiq. 66(1), 14–25 (2001)CrossRefGoogle Scholar
  31. C. Sagan, Cosmos (Ballantine Books, New York, 2013)Google Scholar
  32. J.E. Snead, Ancestral Landscapes of the Pueblo World (The University of Arizona Press, Tucson, 2008)Google Scholar
  33. J.E. Snead, R.W. Preucel, The ideology of settlement: Ancestral Keres landscapes in the Northern Rio Grande, in Archaeologies of Landscape: Contemporary Perspectives, ed. By W. Ashmore, A.B. Knapp (Basil Blackwell, Oxford, 1999), pp. 169–197Google Scholar
  34. A. Sofaer (dir), The Mystery of Chaco Canyon, (Bullfrog Films, Oley, 1999)Google Scholar
  35. A. Sofaer, The primary architecture of the Chacoan culture: a cosmological expression, in The Architecture of Chaco Canyon, ed. By S.H. Lekson (The University of Utah Press, Salt Lake City, 2007), pp. 225–254.Google Scholar
  36. A. Sofaer, Introduction, in Chaco Astronomy: An Ancient American Cosmology (Ocean Tree Books, Santa Fe, NM, 2008), pp.xiii–xx.Google Scholar
  37. A. Sofaer, R.M. Sinclair, Astronomical Markings at Three Sites on Fajada Butte, Chaco Canyon, New Mexico, in Astronomy and Ceremony in the Prehistoric Southwest, ed. By J. Carlson, W.J. Judge (University of New Mexico Press, Albuquerque, 1983), pp. 43–49. Maxwell Museum of Anthropology, Anthropological Papers No. 2Google Scholar
  38. A. Sofaer, V. Zinser, R.M. Sinclair, A unique solar marking construct: an archaeoastronomical site in New Mexico marks the solstices and equinoxes. Science 206(4416), 283–291 (1979)ADSCrossRefGoogle Scholar
  39. A. Sofaer, R.M. Sinclair, L.E. Doggett, Lunar markings on Fajada Butte, Chaco Canyon, in Archaeoastronomy in the New World, ed. By A.F. Aveni (Cambridge University Press, Cambridge, 1982), pp. 169–181.Google Scholar
  40. A. Sofaer, M.P. Marshall, R.M. Sinclair, The Great North Road: a cosmographic expression of the Chaco culture of New Mexico, in World Archaeoastronomy, ed. By A.F. Aveni (Cambridge University Press, Cambridge, 1989), pp. 365–376Google Scholar
  41. I. Šprajc, I.: Lunar alignments in Mesoamerican architecture. Anthropological Notebooks 22(3), 61–85 (2016)Google Scholar
  42. J.R. Stein, S.H. Lekson, Anasazi Ritual Landscapes, in Anasazi Regional Organization and the Chaco System, ed. By D. Doyle (University of New Mexico Press, Albuquerque, 1992), pp. 87–100. Maxwell Museum of Anthropology Anthropological Papers 5Google Scholar
  43. M.C. Stevenson, In 23rd Annual Report of the Bureau of American Ethnology, The Zuñi Indians. (Smithsonian Institution, Washington, DC, 1904), pp. 9–157Google Scholar
  44. H.W. Toll, Organization of production, in The Archaeology of Chaco Canyon: an Eleventh-Century Regional Center, ed. By S.H. Lekson (School for Advanced Research Press, Santa Fe 2006), pp. 117–151Google Scholar
  45. P. Tuwaletstiwa, Foreword in three movements ii, in The Chaco Meridian: One Thousand Years of Political and Religious Power in the Ancient Southwest, 2nd edn. ed. By S.H. Lekson (Rowman & Littlefield, Lanham, 2015), p. xiii-xixvGoogle Scholar
  46. R.M. Van Dyke, The Chaco Experience: Landscape and Ideology at the Center Place (School of American Research Press, Santa Fe, 2007a)Google Scholar
  47. R.M. Van Dyke, Great kivas in time, space, and society, in The Architecture of Chaco Canyon, ed. By S.H. Lekson (The University of Utah Press, Salt Lake City, 2007b), pp. 93–126Google Scholar
  48. R.M. Van Dyke, R.K. Bocinsky, T. Robinson, T.C. Windes, Great houses, shrines, and high places: intervisibility in the Chacoan world. Am. Antiq. 81(2), 205–230 (2016)CrossRefGoogle Scholar
  49. R.S. Weiner, A sensory approach to exotica, ritual practice, and cosmology at Chaco canyon. Kiva 81(3–4), 220–246 (2015)CrossRefGoogle Scholar
  50. R. Williams, F.D. Uzes, R. Sinclair, A. Sofaer, Surveying methods the Anasazi may have used to determine, record, and reproduce a direction. Solstice Project Unpublished Report (1989)Google Scholar
  51. T.C. Windes, in Reports of the Chaco Center No. 5, Stone Circles of Chaco Canyon, Northwestern New Mexico, (National Park Service, Department of the Interior, Albuquerque, 1978)Google Scholar
  52. J.E. Wood, Sun, Moon and Standing Stones (Oxford University Press, Oxford, 1978)Google Scholar

Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  1. 1.Solstice ProjectSanta FeUSA
  2. 2.Haffenreffer Museum of AnthropologyBrown UniversityProvidenceUSA
  3. 3.National Oceanic and Atmospheric Administration’s National Geodetic SurveySanta FeUSA

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