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Loved this presentation and the way Marc integrated this topic with the climate
Marc is a very enthusiastic and knowledgeable speaker very interesting topic with ties to mesoamerican cultures. Thought provoking. Marc is very willing to answer questions.
If you have any interest in the ancient ruins and culture of the Southwest US you should check out Marc's webinars. He does an excellent job of combining his extensive knowledge with excellent images. I always enjoy.
Very thorough and scholarly, with excellent discursions into other scholar's opinions on the subject. Also a great narrative arc to the entire presentation.
Marc Callis presented an engaging and informative presentation about Chaco Canyon. His visuals were clear and interesting, as was his narrative. I am sure there is A LOT more that Marc could share on this and related topics, but the breadth and depth of the talk seemed well done for a short experience. I will watch for future offerings from him!