BY DUNCAN MANSFIELD The Associated Press GATLINBURG, Tenn. — The ancient blue-green mountains with breathtaking vistas and distinctive mists are home to salamanders and black bears, 19th-century log cabins, rippling streams, waterfalls and more than 800 miles of trails, including a large section of the Georgia-to-Maine Appalachian Trail.It’s little wonder the Great Smoky Mountains National Park attracts more than 9 million visitors a year, twice as many as any other U.S.