A C172 PLT LOOKING FOR HIS ENRTE FUEL STOP ARPT LANDS AT 11II INSTEAD OF THE PLANNED 3FK EVEN THOUGH HE HAD MADE AN EFFORT TO AVOID R-3401 A&B WHICH SURROUNDED THE ARPT.

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I WAS ENRTE TO BLOOMINGTON; IN; AFTER SHOOTING AERIAL PHOTOGRAPHY IN DAYTON; OH. I PLANNED A FUEL STOP AT FRANKLIN COUNTY ARPT AND DECIDED TO NAV USING A STRING OF VORS THAT WOULD PUT FRANKLIN COUNTY JUST L OF COURSE. ONCE OUTBOUND FROM THE LAST VOR; I WAS LOOKING OUT AWAY FROM THE PLANE IN THE GENERAL DIRECTION OF MY PLANNED DEST. I IMMEDIATELY SAW WHAT I THOUGHT WAS FRANKLIN COUNTY ARPT. I HAD ALSO CHOSEN TO USE THIS VOR RTE TO AVOID R-3401 A&B; BUT ONCE I STARTED FOLLOWING THE RTE I HAD THIS AREA BELOW THE FOLD IN THE MAP. WITH THE FEW LAND POINTS AVAILABLE TO CONFIRM THAT I WAS HDG FOR THE APPROPRIATE FIELD; IE; LARGE ANTENNAS TO THE W AND A POPULATED AREA TO THE N. I MISTAKENLY PENETRATED R-3401 A&B AND LANDED AT (11II) CAMP ATTERURG. ON SHORT FINAL I SAW WHAT LOOKED LIKE EMER VEHICLES WITH THEIR LIGHTS ON. THEY PROCEEDED DOWN A ROAD PARALLEL TO THE RWY AND I THOUGHT THEY MUST BE A VOLUNTEER FIRE DEPT RESPONDING TO A CALL. UNFORTUNATELY THEY WERE COMING TO MEET ME ON THE RAMP AND INFORM ME OF MY ERROR. THIS IS A VERY CONFUSING AREA TO NAV. FRANKLIN IS MUCH HARDER TO FIND (I WENT THERE AFTERWARDS). EVEN THOUGH THE AIRSPACE IS NOT ALWAYS HOT; I WOULD SUGGEST REMOVING IT FROM THE SECTIONAL OR MARKING IT PVT. I WAS TOLD THE SAME THING HAD HAPPENED 2 WKS PREVIOUS TO WHEN I WAS THERE BY A MUCH MORE EXPERIENCED PLT AND I EXPECT THAT SOMEONE ELSE MAY MAKE THE SAME ERROR AGAIN.