<a rel="nofollow" class="external text" href="http://www.umaine.edu/WaterResearch/FieldGuide/inthewater.htm#orange">Orange algae</a>, mud and <a href="https://en.wikipedia.org/wiki/Devonian" class="extiw" title="w:Devonian">Devonian</a> <a href="https://en.wikipedia.org/wiki/limestone" class="extiw" title="w:limestone">limestone</a> at <a rel="nofollow" class="external text" href="http://www.paleoportal.org/index.php?globalnav=flora_fauna&amp;sectionnav=assemblage&amp;submission_id=2114">Falls of the Ohio</a>.
<p>Ohio River mile 605.
<a href="https://en.wikipedia.org/wiki/Clarksville,_Indiana" class="extiw" title="w:Clarksville, Indiana">Clarksville</a>, Indiana.
Nov. 1987.
File # 87k101.
.
35 mm Kodachrome.
Plustek OpticFilm 7600i and Silverfast 8.
Picture Window 6.
</p>
JPEG quality 95.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/70020260@N04">William Alden</a> from Louisville, Kentucky, USA
CC BY-SA 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/bill_alden/8525208203/">87k101: orange algae at Falls of the Ohio</a>