This is an area less visited than Bisti, but the rock formations here are also spectacular.
There is no trailhead per se, you just drive on a dirt road until you get to a GPS location and park the car on the side of the road. Then you will see a path into the area.
Just explore all around, left and right. You will immediately see the chocolate hoodoos area upon entering the area.
Further away, you can see a small rock garden and I think about 1 further mile another hoodoo city (which you can see in the pics below).
This caltopo map with coordinates shows you how to get there and it shows a GPS path that got from another website and used to explore. Hint: You can use another road, but that one is dirt all the time and the one that I show is paved aoout half of the time.