Ear Spring, Yellowstone National Park
![Image: Ear Spring, Yellowstone National Park](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/ystone_dpk_sampling_ear_lg.jpg?itok=_PQrXyoK)
Detailed Description
USGS scientist Dr. David P. Krabbenhoft sampling Ear Spring, Yellowstone National Park, Wyoming, for dissolved mercury species. Old Faithful is erupting in the background.
Sources/Usage
Public Domain.