Roadside Geology of Texas is a guide to the geology of Texas that you can see from the road. Most of the focus is on Central and West Texas, because the geology is much more obvious and interesting there. I-45, for instance, which runs from Dallas to Houston, is skipped since the landscape is mostly flat and there's really nothing to see. But if you're interested in what you see out your car window on I-10 or I-35, there's lots for you to think about. ( )