GPS Programs Presents

Why the Hill Country Rocks

The Geology Under Your Feet

Tuesday, March 21, 2023

9:30 am Tye Preston Memorial Library followed by a hike in  Canyon Lake Gorge 

Jim Mccullough, retired Conoco Phillips petroleum geologist, will present a program describing the geology of the Texas Hill Country. Mr. McCullough will explain the geologic history of our region, going back 110 million years.  

Be sure to attend so you can learn why it takes a pickaxe to dig a hole in your yard and why we have hills like nowhere else in Texas. 

Register by email at

Members: No Cost    Non Member: $5 payable at the Gorge Visitor Center

Canyon Lake Gorge Preservation Society

Contact Us

Mailing Address
16029 S Access Rd
Canyon Lake, TX 78133

Our staff is composed entirely of volunteers who serve as Trailblazers, Tour Guides & Docents, and Board & Committee members. Please contact us by email at If you do require immediate assistance, call 830-964-5424


Getting Here

GPS coordinate
N 29.86304 W 098.18750


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