Arizona Travel: U.S. 160 from Black Mesa to Four Corners
- Baby Rocks Mesa: You'll pass some of the most interesting geologic features of the drive between mile markers 407 and 408. Oddly shaped pinnacles and hoodoos stand along the highway, with sharply defined layers running horizontally through the sandstone and siltstone cliffs. The vaguely Bryce Canyon-like formations look something like red flowstone caught in the act of melting into the earth. Pull over (safely) to check it out.