 The forest consists of 89% upland hardwoods, 6.8% pine, and 4% mixed hardwood and pine.34% of the trees in the forest are over 80 years old, 48% are between 50 and 80 years old, and 18% are less than 50 years old.Native Americans were living in substantial semi-permanent villages and rock shelters in Northern Overton County as early as the Archaic period (c. 8000-1000 BC).