Just keep in mind it will very hot when you come out and youll have to hike up quite a few steps to get out so the less you carry the better.
By the time the tour ended I started to get a bit of a chill (don't worry, shortly after you step outside of the cave that goes away). My daughter (7) had a very light weight full sleeve shirt on. It wasn't because she was cold, she just didn't like getting dripped on inside the cave.
It's 52 degrees Fahrenheit inside
Yes....light jackets or sweatshirts
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