Surprise Yellowstone geyser eruption highlights little known hazard at popular park The Associated PressWhat caused the Yellowstone hydrothermal explosion? Yahoo! VoicesDon’t Panic: The Yellowstone Explosion Isn’t Tied To Its Supervolcano ForbesYellowstone Explosion Sends Visitors Fleeing The Weather ChannelSurprise Yellowstone geyser eruption highlights little-known hazard at park East Idaho News