How Yellowstone Works (Geology Supervolcano) Postcards

How Yellowstone Works (Geology Supervolcano) Postcards

Yellowstone National Park was the first national park in the world. As many geologists know, Yellowstone Caldera is the largest supervolcano, a volcano capable of producing a super volcanic eruption with ejecta greater than 1,000 cubic kilometers (240 cubic miles), on the North American continent. The caldera is considered an active volcano; it has erupted with tremendous force several times in the last two million years. Showcase educational, scientific attitude with any of these gifts featuring "How Yellowstone Works" from a geological point of view. Memorable gifts for all fans of Yellowstone and supervolcanoes!