Pinus ponderosa (trunk). Location: Nevada, Childrens Discovery Loop Red Rocks
<a rel="nofollow" class="external text" href="http://www.hear.org/starr/">Forest &amp; Kim Starr</a>
CC BY 3.0
Plants of Hawaii, <a rel="nofollow" class="external text" href="http://www.starrenvironmental.com/images/full/starr-071226-0886.jpg">Image 071226-0886</a> from <a rel="nofollow" class="external free" href="http://www.hear.org/starr/plants/images/image/?q=071226-0886">http://www.hear.org/starr/plants/images/image/?q=071226-0886</a>