Yellowstone Lake Spire
By Denver Microbeam Laboratory
March 2004 (approx.)
![lake spire material](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/483_13.png?itok=Oe5VfHsF)
Detailed Description
Spires from the floor of Yellowstone Lake appear to be composed of diatoms and silicified bacteria.
Sources/Usage
Public Domain.