As the Earth changed during the past billion or so years, what happened to create the Hill Country of today? The presentation will reveal how the Hill Country developed into what we see today. Emphasis will be placed on how the plates that make up the Earth’s crust have moved over time, why do we have the Llano Uplift, and how did the mass extinction that resulted in the death of dinosaurs 66 million years ago mold the modern Hill Country. This presentation sets the stage for Hill Country Geology. Part 2, which describes the fossils that occur here and how they are identified.