You have to go to their main office which is called "thrillville" and it has a sign out front that says the gorge underground. It a lot easier to do it online or they can do it for you, or just call. They are very helpful! This time of year they fill up quickly! Its so worth it! Try the kayaking in the mines too!!! They also do those tours!!!
Yes, if a slot is available you can pay same day.. But this time of year will be tough to find an open spot.
I'm going tmr and got cash so thx for the help I appreciate it a lot
I don't recommend waiting until you are there... call ahead, I am sure they will take you if a spot available
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