Interesting Yellowstone trivia. Click on the factoid to learn the details.

The Yellowstone Caldera is largest known center of active volcanism in the world. The caldera measures 30 by 45 miles.	Yellowstone has the largest concentration of geysers and other hydrothermal features in the world.	Yellowstone has more earth quakes than the entire state of Alaska	Yellowstone became a national park 1872	Isa Lake drains into both the Atlantic Ocean and the Pacific Ocean
Yellostone has 300 active Geysers.	An estimated 10,000 Elk live in Yellowstone Park.