A swarm of 6 small earthquakes hit Yellowstone Lake, 23 miles from Old Faithful Geyser, Wyoming on June 23, 2016. Is this increased geological activity another sign that the ground under the lake rising significantly?
After the magma chamber under the Yellowstone area collapsed 640,000 years ago in its previous great eruption, it formed a large caldera that was later partially filled by subsequent lava. Part of this caldera is the 136 sq mi (350 km2) basin of Yellowstone Lake. READ MORE