North IrvineEstill Springs Historical MarkerSweet Lick KnobSweet LickEstill Collegiate Institute Historical MarkerEstill County Historical MarkerIrvine Historical MarkerIrvineBattle of Irvine Historical MarkerWest IrvineStumpCalla AirportCaptain John C Wilson Historical MarkerLower White OakCalloway CrossingEstill CountySouth IrvineRavennaLow KnobWisemantownWitt SpringsSparks MountainCow CreekWittCalloway CreekCamp BurnamwoodReevesCottage Furnace Historical MarkerBarnes MountainPeter MountainHargettEstill Steam Furnace Historical MarkerPittsHillsboro HeightsTipton RidgeMillers CreekPreacher Estes MountainRed River Iron Works Historical MarkerAldersgate Camp and Retreat CenterLily Mountain