Yellowstone Caldera

Yellowstone Caldera, also known as the Yellowstone Plateau Volcanic Field, is a Quaternary caldera complex and volcanic plateau spanning parts of Wyoming, Idaho, and Montana. It is driven by... Wikipedia

• Location:  Yellowstone National Park, Wyoming, United States
• Parent range:  Rocky Mountains
• Last eruption:  70,000 years ago
• Easiest route:  Hike/auto/bus
• Data source:  DuckDuckGo