div class=ts-pagebuttonPage 1button div class=ts-image amp-img class=ts-thumb alt=Page 1: iowadotgovAbout this-poster: OAK SAVANNAS Savannas are known for their scattered trees — Often large wide-crowned oaks — that tower above a prairie groundcover These oak openings src=https:reader034vdocumentsusreader034viewer20220423235f0d10dd7e708231d438825fhtml5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdiv