Among the nine active geyser basins at Yellowstone National Park, the Norris Geyser Basin is recognized as the hottest. With its 193 geysers, including Steamboat Geyser, which is the tallest active geyser in the world, Norris Geyser Basin is well worth the international attention it receives every year. The tour of the Norris Geyser Basin, featured here on this National Park Service page, includes...