There is a $5 fee to enter the park unless you have a National Park pass. We had our own flashlights and park pass, so for us this was a "free" activity. A phone flashlight wont be enough, better to go with headlamps or real hand-helds. Also, make sure not to wear any shoes that have been in another cave as they are worried about infecting the bats.
Only for a parking fee. $5 bucks. It's a self guided tour.
U'll definitely want to rent one of their flashlights. It makes a BIG difference
It's $5 to park and $5 for a flashlight rental. Otherwise you can definitely explore the cave on your own.
Thanks! Your answer is awaiting moderation.