Yellowstone National Park is a national park located in the western United States, largely in the northwest corner of Wyoming and extending into Montana and Idaho.
Cipher Ambrose built a secret Deviant Research Facility on the border on Yellowstone National Park where he kept The Runaways before their escape.
Wildlife
- American Bison
- Bald Eagle
- Common Raven
- Cougar
- Coyote
- Cutthroat Trout
- Elk
- Gray Wolf
- Grizzly Bear
- Mule Deer
- North American River Otter
- Plains Pronghorn
- Red Fox
- Rocky Mountain Brontothere
Reintroduced Wildlife
- American Camel
- American Cheetah
- American Hunting Hyena
- American Lion
- American Mastodon
- Ancient Bison
- Barbour’s Pronghorn
- California Tapir
- Columbian Mammoth
- Common Elk-pronghorn
- Dire Wolf
- Eremotherium laurillardi
- Giant Beaver
- Giant Musk-ox
- Giant Pika
- Giant Short-faced Bear
- Great Elk-pronghorn
- Hagerman Horse
- Harrington's Mountain Goat
- Jefferson’s Ground Sloth
- Lesser Short-faced Bear
- Long-horned Bison
- Merriam’s Teratorn
- North American Saber-toothed Cat
- North American Scimitar-toothed Cat
- Northern Glyptodont
- Northern Pampathere
- Passenger Pigeon
- Rocky Mountain Locust
- Scott’s Horse
- Shrub-ox
- Soergel's Musk-ox
- Stag-Moose
- Western Camel
- Western Horse
- Western Pygmy Pronghorn
- Woodland Musk-ox
- Woolly Mammoth