San Juan Basin
Archaeological Society

a Colorado Nonprofit Corporation
Lewis Mill

The San Juan Basin Archaeological Society... exploring, learning about, and preserving
archaeological, cultural, and historical resources in the Four Corners region since 1979.


About us


Field Trip and Activity Schedule



Reading List

John W. Sanders Internship Fund

Links and Volunteer Opportunities

PAAC Program

Field Trip Archives

Club Business

Contact us

Next Meeting - August 14th

Our next meeting will be held on Wednesday, August 14th, at 7:00 p.m. in the lyceum at the Center of Southwest Studies at Fort Lewis College. After a brief business meeting, Richard Friedman will present: "Using Computer Technology to aid in the Identification, Documentation, and Visualization of the Chacoan Landscape (Built Environment)." There will be a social at 6:30 p.m. in the CSWS foyer.

Archaeologist Richard Friedman combines diverse skillsets in geology, remote sensing, archaeology, and new digital technologies to study the Chaco world. He worked with the Navajo Nation Chaco Sites Protection Program to document countless Great Houses and roads throughout the Four Corners region. Friedman is also a remote sensing expert who has studied Chaco roads for over 30 years using a variety of techniques including low sun angle aerial photography, thermal infrared multispectral imaging (TIMS), and most recently, Light Detection and Ranging (LiDAR) and Structure from Motion (SfM) photogrammetry. He has published articles on Chaco roads, the Newcomb field system, the built environment of downtown Chaco, and Chaco’s minimal agricultural productivity. Friedman appears in the 1999 Solstice Project documentary The Mystery of Chaco Canyon.


Upcoming Events and Summer Lecture Series at the Center of Southwest Studies at Fort Lewis College

Follow this link to a schedule and more information: 2019 Summer Events and Lectures.

Four Corners Lecture Series

The Four Corners Lecture Series is produced by several local organizations who sponsor speakers each year. The series features presentations on the archeology, current Native American cultures, history, and natural resources of Mesa Verde and the Four Corners Region. Guest lecturers will share their knowledge, interpretations, and experiences in the Four Corners. The following lectures for 2019 are free and open to the public: 2019 Schedule.


SJBAS Quick References

     Field Trips

     Quick Reference Guide

     Brochure 2019

Moki Messenger - July 2019

To submit material for the Moki Messenger and this website, please email it to

This site was last edited on July 12, 2019.


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