Yellowstone Volcano Observatory
By Yellowstone Volcano Observatory
2013 (approx.)
![Yellowstone Volcano Observatory graphic image. Geyser and caldera outline.](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/yvo_nonames.png?itok=euVTmE_m)
Detailed Description
Graphics image depicts the Yellowstone National Park boundary with the Yellowstone Caldera in red and Old Faithful Geyser in eruption.
Sources/Usage
Public Domain.