"I think we are moving beyond a cartoon stage of understanding now."
A recent study further unravels the mystery of Yellowstone's volcanic system.
"Man, the changes would be so much bigger than anything we've ever seen."
The earthquake swarm began six weeks ago and is ongoing.
Earthquake swarm is currently active on the western edge of Yellowstone National Park.
The eruption risk at Yellowstone remains low, but one of the recent earthquakes was the biggest to have hit since 2014.