The petroglyphs were created by the Sinagua Indians between about 1150 and 1400. The Sinagua mysteriously disappeared from the area around 1400 and drifted in different directions. They had vanished by the time the first Europeans came to the area.

There are a couple of interesting theories. One of them, the one I find more fascinating, is that their entire tribe was lost in several battles with the Yavapai.

Sinagua means "without water" and Yavapai means "people of the sun".

Also, a couple of important tribes recognize the Sinagua as their ancestors. The Hopi tribe, for example.

This kind of historic episodes fascinates me.