A young tourist is lucky to be alive after he plummeted off a bluff at Rock Island State Park while hiking with friends Sunday afternoon.The man, identified only as a 20-year-old Hendersonville resident, was airlifted from the park just after 6 p.m. Sunday, an hour-and-a-half after his harrowing fall “He and others were hiking in the Blue Hole area when he got too close to a ledge and fell 25 feet from the bluff,” said park manager Damon Graham of the late-afternoon accident. “They had gotten off trail. We recommend all visitors stay on the marked trails for safety.”The hiker suffered serious leg injuries, requiring an airlift given his remote location.“It’s a miracle the fall didn’t kill him,” Graham said.