Some interesting history. I had not ever read about this before. Still, not sure I would be willing to use it if given the opportunity. You end up in that water and you will be luck if you just get some nasty 2nd (or worse) degree burns. You probably will die. Archive: https://archive.today/16qUs From the post: >>Only 12 people have walked on the moon and 22 have descended to Challenger Deep, the deepest point of the Pacific Ocean. While the official number has never been calculated, a comparable number of people have ventured onto the surface of Yellowstone National Park’s scalding hot Grand Prismatic Spring. This feat was only possible because of a long-lost piece of Yellowstone’s history: The specially designed Little Dipper, the park's first and only thermal pool watercraft. Lifelong Yellowstone employee, enthusiast and author Jeff Henry is one of the few who rode out onto the dangerous surface of Grand Prismatic in the boat built to the specifications of Rick Hutchinson, a geologist with the U.S. Geological Survey and lifelong Yellowstone scientist.