At Flint Ridge, extensive flint deposits and quarrying by early residents shaped the local ecosystem, affecting how animals thrive and how trees grow. Although mining ceased hundreds of years ago, flint pits dug by ancient Americans remained and became vernal pools, temporary wetlands that now support a variety of plants and animals. A flint layer just a few feet beneath the soil hinders drainage and influences which tree species live here. These vernal pools are critical breeding grounds for 10 species of salamander, including the Four-toed Salamander, an unusual native species for the area and a Species of Concern in Ohio. Thriving and diverse native amphibian populations such as those at Flint Ridge indicate a healthy ecosystem. This seasonal forested wetland also supports American beech, which prefer wet areas, as well as oak, maple, hickory, sycamore, dogwood, redbud, hop hornbeam, cherry, elm, and sweetgum. The flint beneath the soil may shorten the trees' lives by blocking downward root growth and making them less stable.