There are many small Ancestral Puebloan (Anasazi) ruins and Ute and Anasazi petroglyph sites scattered along Montezuma Creek. Some are hard to spot, so you have to keep an eye out for them.
Near the middle of the canyon is Three Kiva Pueblo, where the BLM has restored one of the kivas for people to check out. The pueblo was probably used until around 1300. It was very interesting and quite a special place.
My photos are from 2007.