Micah, the brave explorer, standing on...ICE! (hence the name, "Big Ice Cave". We Montanans are very pragmatic). That's an ice stalactite thingy in the background. The cave only goes about 20 yards deep, and then there is a hole where it plunges into a deeper cavern. You used to be able to descend there as well, but they have it barred off (probably to keep people from getting hurt).