One of the fun parts of geology is learning to read rocks. I don't mean reading words that people have painted or carved on them. Instead, I mean examining the rocks, looking at their minerals, structures, position, fossils, and other things to discover what they can tell us about the history of the Earth.

On our trip home from Memphis, we took a new route across Alabama. We drove Hwy 78 to Birmingham, and then south on the interstate to Montgomery. From there, we took Hwy 231 south to I-10, and from there, it was a straight shot home. Very nice drive, with no bad traffic. They have extended Hwy 78, exposing some wonderful new road cuts. At the exit for Hwy 22, we stopped to look around.