Yellowstone’s geysers are breathtaking but incredibly dangerous. The water in these geothermal features can exceed 400°F (204°C), hot enough to cause instant third-degree burns. The ground around them is often just a thin crust covering scalding, acidic water, and several people have died after falling through. In 2016, a man slipped into a hot spring, and his body was completely dissolved within a day. Steamboat Geyser, the world’s tallest active geyser, can shoot boiling water 300 feet into th