You can carry it on the trails but concealed. keeping it in your vehicle or trailer should not be an issue. "Our rules state that you may not show/display or fire your gun in a state park. ... But even with a license, handguns are not allowed in parks that are leased from the federal government. Check with the park before you go. Refer to Texas State Park Regulations for specific regulations - 59.134(d)."
No
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