Arky,
They were contemporaries of the Anasazi culture, but a bit farther north, mostly in Utah. 700-1300 AD. Google Range Creek Canyon in Utah for a fascinating story. Little is known about them, but Range Creek is promising to give up a lot of secrets.
There have been few traces. Mostly just the pictographs, some moccasins, arrow heads, limited pottery and fewer baskets. They used pit houses and rock shelters. Like the Anasazi, no one knows where they went.
