Now this shot was a challenge. The main challenge was the camera position since the shot required a tripod. There is literally nowhere to stand here and be out of the water that is wider than 6 inches. So, I placed two tripod legs on one rimstone dam and one leg on a different one. Each of my feet had to block the water flow to the two legs in keep them out of the swift current and keep the tripod stable. Then I had to run the underwater flash cable down the passage and fire it off of a 12v battery in my hand. In my other hand was a Sunpak 283 electronic flash and my remote shutter cable. I held my only dim light in my mouth (I didn't want my headlamp light to effect the shot). All this while balancing on the thin rimstone dam in near darkness. There were deep pools in front and behind me which are up to 15 feet deep. Everything had to remain stable in this position in order to capture three frames with a considerable amount of time between shots to change the underwater flashbulb. The image itself is three frames merged together to create what you see. There is one frame of each pool lit up and then an overall scene lit with the Sunpak electronic flash. I hope that it was worth all this!