A faithful reader emailed me and asked me about this photo:
How did I photograph it, they ask.
Well, That was some calcite deposit which is leaking down from the roof of the cave. It would of taken years for this to form. I set up my camera on my tripod, and extended it as close as I could to the deposit. Setting up a tripod in a cave with bolders all over the floor is not an easy task, let me tell you!