It got much better when we got below ground. We were part of a group of about 25 that had an out and back tour that included a boat ride in the cave.
I took a lot of photos but they all came out like crap. My puny Kodak Easyshare was just not up to the task.
I remember trying to take this photo
Use The Google and find more cool photos.
My kids and I had a great time. Worth the money and worth the 350 mile round trip.