I took these pictures with my Canon PowerShow SD300 without a tripod. I tried not to use a flash, and hence some of the pictures are dark. I then enhanced them in iPhoto...hence some of the false color in the images. Not the best way to take pictures in very low light, but I did get some reasonable pictures...
One other thing to note that's not obvious in these pictures....the rooms in these caves are huge! Everything is very open and in some cases the rooms are a couple of hundred feet high. We were all amazed at how open the caves were.