I drove out to this rock formation which I found interesting as there was a whole in the side of the formation and to the left a rock balancing on another
Be careful of driving off of the highway on to reservation side roads. They are not very good and the natives expect you to get permission before doing so. Here is a close up of the formation.
All of the cliffs and mesas around the area are red sandstone. This whole area used to be under a shallow sea.