The Belgian Pool was named for a tourist from Belgium who was killed in 1929 after falling into the pool. Enthralled by an eruption of Grand Geyser, the unfortunate man apparently wasn’t watching where he was stepping. The range of colors is caused by the variation in the composition of the microbial mats caused by the change in temperature at different parts of the pool. (The colors would have been more intense with polarizing filters but I don’t have two polarizing filters. This more intimate scene is more effective with the regular lense separation of the Heidoscop than the shots I did of Old Faithful and other majestic scenes in Yellowstone and the Grant Tetons, most of which would have benefited from hyper stereo.) Original slide taken June 1, 2015 wit ha tripod-mounted Heidoscop using Provia 400X exposed at 1/200 at f22.