Yes, there is a burn ban according to their TPWD Page: https://tpwd.texas.gov/state-parks/caprock-canyons

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I rigged up a portable fire pit using my turkey fryer burner and lava rocks, because it was my niece and nephews first camping trip and we had to have a fire for s'mores. You can buy a proper setup on amazon: https://www.amazon.com/Outland-Firebowl-893-Portable-Diameter/dp/B00KY4S388/ref=sr_1_9?crid=Y1UYZ3DRRSSM&keywords=portable+fire+pit&qid=1679926144&sprefix=portable+fire+%2Caps%2C622&sr=8-9&ufe=app_do%3Aamzn1.fos.f5122f16-c3e8-4386-bf32-63e904010ad0