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Book & Research > Solstice Project Papers

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

by Anna Sofaer, Robert Weiner, and William Stone. 2017. In The Science of Time 2016: Time in Astronomy & Society, Past, Present and Future, edited by E. Arias, L. Combrinck, et al, pp. 79-102. Astrophysics and Space Science Proceedings 50. Springer, Cham.

Media > 2017



Media > 2018

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Sundagger Colorimagebullfrog

News & Events > Archive

BLM at it Again! Act Fast to Save Chaco Region!


Despite the cancellation of a 4,434-acre lease of oil and gas parcels north of Chaco Canyon, Secretary Zinke and the BLM continue an assault on the cultural resources of ancient America throughout the Four Corners states. Tomorrow, on March 20, the BLM will proceed with a lease of 41,000 acres in southeastern Utah in an area rich with archaeological sites.
At least 10 Chaco Great Houses are within 2 miles of these parcels, including at least two Great House sites within the new lease boundaries. In addition, at least 4 prehistoric road segments are adjacent to or within the parcels.


There are also countless archaeological sites and rock art panels spanning thousands of years in and near the leases. In the words of Jim Allison, a professor at Brigham Young University, “There are so many sites [in the area], it would take an army of archaeologists decades to map them… they shouldn’t do oil and gas extraction there.” Make your voice heard and stand up against further attacks on these invaluable traces of America’s indigenous history!

Call or e-mail Secretary Zinke at

(202) 208-7351,

and Utah BLM State Director Ed Roberson at

(801) 539-4010,



News & Events > Current

​Catch the Solstice Project on TV! ​


Sofaer Weiner 669 150Alert from "Report from Santa Fe" PBS TV in New Mexico

“CHACO CANYON UPDATE! Archaeologists Anna Sofaer and Rob Weiner discuss “Chacoan Astronomy, Cosmography, Roads, & Ritual Power.” They also reveal discoveries about the Chaco site and their road network using LiDAR and new technologies - this week on "Report from Santa Fe."

This is an especially timely show due to this week's revelation that the Bureau of Land Management is planning to issue oil leases near Chaco Canyon in March.

Entire Eastern side of the State
- Saturday, February 9 - 6:00 PM
   Ch. 3, KENW-TV (PBS in Portales)
Las Cruces and the Southern part of the State
- Sunday, February 10 - 8:00 AM
   Ch. 22, KRWG-TV (PBS in Las Cruces)
Albuquerque, Santa Fe, and all of Northern NM
- Sunday, February 10 - 8:00 AM
  Ch. 5, KNME-TV (PBS in Albuquerque)
- Sunday, February 10 - 4:30 PM
   Ch. 9.1 (over the air),
     Ch. 220 HD, Comcast Cable
       DISH Ch. 9 / 8825 HD
- Saturday, February 9 - 6:00 PM
   DISH-TV, Ch. 3
- Sunday, February 10 - 5:30 PM
     DirecTV cable, Ch. 3
- Monday, February 11 - 9:30 AM
    89.1, KANW-FM, over the air and streaming online
To learn more about Lorene Mills and “Report from Santa Fe,” and to catch the interview online after it airs, visit here!