Heather CallaghanActivist Post
There are over 3,000 earthquakes per year at Yellowstone Park, home to one of the world's largest super volcanoes - Yellowstone Caldera. Most of them are mini-quakes.
This past weekend, on Sunday March 30th, however, three earthquakes broke out and one of then was quite sizable. In fact, it was the largest earthquake to hit in 34 years - February 22, 1980.
