The oldest known rocks in the Hill Country are estimated to be 1,326,000,000 years old. They and all younger ones that follow have interesting stories to tell. The oldest known Native American artifacts in the Hill Country are 12,000 years old. They, too, have interesting stories to tell. Join us to hear some of these stories: how North America was formed and the Hill Country's unique position in this, how the earliest Americans lived; how Enchanted Rock was formed; how ancient tools and weapons were made and so much more. See some of the rocks and artifacts on which history is based. .