Russo, your last photo shows the top of the cut stone tunnel face. Was the tunnel opening still accessible for entry in 2008 like it was in 1966? I don't think I would be brave enough to go into the tunnel again if it was open. But hiking from the Sharrod loop over the rock wall grade along the Palisade cliffs would still be fun to do again (if you don't have to dodge motorcycles and ATVs.