I'm going on vacation for a few days to Mammoth Cave National Park.

I'm going to let this video do the explaining since it's better at doing so than me.

If you want to know more about it, here's the Wikipedia article.

II love exploring caves for it makes me feel like I'm Indiana Jones!

Hopefully I won't get lost; who knows what sort of monsters live down there?! (I know that there's only bats, cave crickets, and the Kentucky cave shrimp down there, so humor me on this)

Wish me luck!