I don't know the age of the trees other than mixed. I do have about 10 large black walnut trees. But otherwise, there are a few big, old trees and lots of other size trees. I know, not a very precise answer but it is the best of my knowledge. This is not a mature forest. I belive sometime in the past (maybe 40+ years ago) that the area might have been grazed. Thus the few big old trees and lots of brushy stuff otherwise. I do know nothing has been done in the past 20 years except the areas near my house where I harvest dead or bent trees for the little bit of firewood I use.