Geology of Garner State Park

Walking round the Frio River bed I couldn't help notice the low, very low water levels.  Because of the low waters I had a great opportunity to see the rock formations that where once built as described below and then through the process of erosion have been altered in to these unique shapes.  When the river is flowing stronger the current rushes across these rock  and takes little bits with it down river then deposits it Nueces River.  Take a look at some of these remarkable photos.

Geology: Deep canyons, crystal-clear streams, high mesas, and carved limestone cliffs are the brush strokes in the geologic painting of this intriguing terrain. Many backcountry paved roads wind through canyons along streams here, offering the traveler a different pace from the freeway rush.

The rock formations in this area are early Cretaceous in age, deposited over millions of years in warm, shallow seas that once covered Texas. The Glen Rose formation, a collection of limestone, shale, marl, and siltstone beds, was deposited along the shifting margins of the sea where dinosaurs roamed in great numbers, leaving their footprints in the sands. The Cretaceous Sea then spread over Texas, depositing the Edwards Formation (limestone), over the Glen Rose beds. This sequence of strata, Glen Rose below, Edwards above, is found throughout this area.  Information from http://www.tpwd.state.tx.us/spdest/findadest/parks/garner/#hist