At Woodbury there are no mine shafts that I'm aware of----it was all strip mined and reclaimed. lots of cuts, saddles, high-walls, and ponds all over the place. If you are new to the area---bring a compass to keep from getting turned around. If you like hunting THICK stuff---look for the autumn olive fields ----you can set up REAL CLOSE on the ground if you do some trimming or find where the trails enter the woods.
Good trick I picked up from Elkherder and expounded on a little----I go to Google earth and check out a prospective area when looking for a new spot. I then print off the page and take it with me---makes it easier to re-orient yourself if you get into a mess of cutbacks and ravines while scouting or hunting. Lots of deer here----I have only seen a few BIG bucks myself----but then again I don't hunt them----I hunt the does cause I figure the boys will be there eventually and in the meantime, I can fill my freezer.
If you have any questions or need help in this area---you can PM me.......I've never hunted the Tri-valley area though. I'm pretty sure you can get on the ODNR website and get a map of each area, but they are really only good for locating boundaries.
ben