Boy, is that interesting! You really captured this one, I was sitting there wondering what on earth they were trying to depict, with that headgear. Even shows the diamond patterns. What do the Apache’s feel the headgear represents?
The Dancers are Apache Spirit Dancers. If you search on Bing you get lots of hits, including very modern ones. Apparently the dances survive in the annual festival in Gallup NM.
Here is a url with several more pictures.
http://www.worldfpa.org/poto.asp?id=88
I haven’t been able to find what the spirit dances represent but it seems clear the costumes are depicted on the petroglyphs found all over the southwest. The question is...... did the Apache develop a cult from seeing the petroglyphs? or have the costumes been in use for 11,000 years when the article says the petroglyphs were rendered?