An intaglio or geoglyph is a sort of large petroglyph on the ground, best seen from an airplane. The ones in South America are more well-known, as are the ones near Blythe, California. This is the only one I know of in Arizona. It's an interesting thing to see, but I admit, I was a bit disappointed that the actual human figure is only about 20 feet long! I was expecting it to be very large. I took one photo with my husband in it to give you an idea.
It is right off the side of the highway on the Paloma Rd. between Quartzsite and Bouse, in western Arizona. There is a Scenic Viewpoint on the west side, a path leading from viewpoint to geoglyph, but no signs until you get to the thing.