SEM image of the silicified microbial mats that form Castle Geyser
By Yellowstone
![SEM image of the silicified microbial mats that form Castle Geyser](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/img7964.jpg?itok=wiX0_D2e)
Detailed Description
Scanning Electron Microscope (SEM) image of the silicified microbial mats that form Castle Geyser. USGS image by Dakota Churchill.
Sources/Usage
Public Domain.