All of the geological structures around here have names, but I can't place this one exactly and haven't taken the time to retrace just where it was. It looks to me like a South American ziggurat, only this one was carved in the layers and layers of Arizona sedimentary rock by wind and water. I looked through some geological history videos describing the process and found a good one that I included below.
I took a little time with this photo, cropping and retouching it to bring out the features. I left it really large, so I think it's worth a click. Enjoy!