Is it free to get in or does it require a price?

You can schedule a tour by contacting them. It was a tax deductible donation of $100 when I went 12/2018.

I don't quite recall the cost of their events, but it is around $10 a person. Only open to the public a couple of times a year. Check their Facebook page for times (usually in October).

It's only open to the public during the bat festival days, and it is not free.

Cost