With Roadside Geology of Texas as your travel companion, you'll learn how the state's stunning landscapes were created, from the rugged peaks of the Guadalupe Mountains to the limestone ledges of the Edwards Plateau and the shifting sands of the Gulf Coast. With more than one billion years of geologic history on display and home to nearly every rock type under the blazing sun, Texas geology is world-class, including the subsurface, where oil can be found if you know where to look.