Carta Valley Preserve (Brooksjack Cave)

This preserve is still officially unnamed, and located in the Carta Valley area of Edwards County, less than eleven kilometers (seven miles) from the Deep and Punkin Karst Preserve. The area is known for its large and beautiful caves such as Midnight, BMC, Blowhole, Deep, and Saltillo; and for large bat caves such as Punkin, Dunbar, and Rucker Bat caves. Despite decades of exploration, new caves are consistently being discovered in the region by those that actively seek them.

The main cave in the preserve, Brooksjack Cave, is still being actively surveyed.  It has large walking passages that branch into multiple other passages; many of which are intersecting. Parts are decorated with stalactites, stalagmites, helictites, draperies, and columns while other areas are barren due to abundant condensation corrosion from the airflow. Like other caves in Carta Valley, there are hypogene features such as cupolas, vents, floor rifts, and multi-level phreatic mazes. Other caves in the area that have these qualities have proven to be quite significant. Some caves, such as Deep Cave and Midnight Cave, have no appreciable airflow at their entrances, yet are exceptionally significant caves in both length and beauty. 

There is also an ongoing karst feature dig not far from Brooksjack Cave that will hopefully open up into passages.