Yellowstone - 14 of 26

Yellowstone FAQs - 26 Found

How much volcanic activity has there been at Yellowstone since the most recent giant eruption?

Since the most recent giant caldera-forming eruption, 640,000 years ago, at least 30 smaller but still destructive volcanic eruptions have occurred at Yellowstone. Some of the eruptions were approximately the size of the devastating 1991 Pinatubo eruption in the Philippines, and several were much larger.

Tags: Geothermal Resources, Earthquakes, Tectonics, Monitoring, Volcanoes, Lava, Seismicity, Ring of Fire