Hydrothermal explosion at Biscuit Basin in Yellowstone National Park damages boardwalk USA TODAYVIDEO: Biscuit Basin geyser explodes, sending Yellowstone tourists packing Jackson Hole News&GuideHydrothermal explosion leads to closure of parts of Yellowstone National Park CNNBiscuit Basin in Yellowstone National Park temporarily closed due to hydrothermal explosion National Park ServiceSEE IT: Yellowstone’s Biscuit Basin explodes as tourists run away from falling debris Fox News