Geologic Wonders of Central Texas
Have you ever wondered why the landforms to the east of Austin are so different from those to the west of Austin? Or, how Enchanted Rock was formed? Central Texas is filled with Geologic Wonders, of easier access and of a more astonishing variety of igneous, sedimentary, and metamorphic rocks, fossils, geologic structures, and complex landforms, than can be seen in any other comparably small region on earth. These Wonders developed in diverse manners, over a vast interval of geologic time. By understanding what they are and how they originated, we are equipped to appreciate them and perhaps to see ourselves in relation to the earth in an entirely different way.
(Environmental Science Institute, 2002-03-22)