So. Much. Cool. Seriously, this place is awesome and spooky and a super fun 'hike' on a super rainy day. Bring a back up light source just in case, and a jacket because it is a constant 42 degrees down there.
We only explored the lower cave this time as the upper is more difficult and probably not good for the kiddos. But we had a great time, and even learned a bunch of interesting stuff about the cave life and the volcanic activity that formed them.