Lava River Cave
After getting to 12,633' on Humphreys Peak, I descended about 20' below the Earth's surface in the nearby Lava River Cave. As you can see from the photos, I really planned all of this out, bringing in several Klieg lights and a laser effects machine. It took a long time to bring them down into the lava tube, but then I couldn't find the outlet. So, you get what you get.