We did the tour of the Lucas cave, with a crazy amount of steps, but so many gorgeous formations.
It's amazing when you drive up, where the cave are just looks like the rest of the scraggly, rocky hills nearby. You would have no idea of the beautiful treasures underneath.
I really, really wanted to touch them. I have decided I am a rather tactile person so the 'no touching' rule nearly drove me insane. I try not to get cranky at kids when they try to touch something they shouldn't because I completely understand the urge t touch, feel explore.
My favourite formations was the 'ribbons' that ran along the roof at one part of the cave.