The Southern Limestone/Dolomite Valleys and Low Rolling Hills level IV ecoregion is karst topography – a landscape dominated by limestone and dolostone. Hills throughout are made of chert and sandstone. The karst provides springs, caves, and alkaline soils that in pre-settlement times supported many types of broadleaf trees. Hills within the ecoregion provide habitat for plants and animals needing dryer habitats. The region is nested within the Ridge and Valley level III ecoregion, an area dominated by long ridges and valleys. The diverse topography and geology of this ecoregion support many ecosystems, and thus, many species.
-R. Scot Duncan