Hydrothermal eruption in Yellowstone National Park sends sightseers fleeing - The Guardian
- Hydrothermal eruption in Yellowstone National Park sends sightseers fleeing The Guardian
- Yellowstone eruption blasts debris into sky near Old Faithful geyser BBC.com
- A baffling, dangerous explosion in Yellowstone: What is a hydrothermal explosion? USA TODAY
- 'Spectacular and definitely hazardous': Yellowstone geyser erupts, firing steam and debris over nearby tourists Livescience.com