Williamson Country already has a tourist cave - they found it when they were doing test drilling for I-35 construction decades ago. Most of the county is underlain by limestone and caves and sinkholes are all over the place. I’m surprised some enviro-weenies haven’t claimed a rare salamander lives in the cave so it cannot be filled.
sadly such a critter probably does,
when Man battles God and the Nature He created, we lose.
Just turn into an extension of the existing tourist cave.
Maybe they’ll find an indian’s bones in it and the whole area can be off limits.