<p>knobby cypress knees growing in a green swamp</p>
<p>Knobby knees often grow at the base of bald cypress trees. Scientists think they provide stability in the swampy conditions that bald cypresses prefer.</p>
<ul><li>Keywords: cypress knees; swamp; big thicket</li></ul>
NPS Photo
Taken on 11 June 2019
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