USA Storm leaves parts of Great Smoky Mountains park closed By Gay Nagle Myers / July 10, 2012 Share 1 -- A number of hiking trails, three campsites and five roadways remained closed to the public in Great Smoky Mountains National Park in Tennessee. The closures are a result of a line of severe thunderstorms that struck the park on July 5, downing thousands of trees and killing two visitors. Park staff is in the process of clearing roads and assessing trails, but it could be several weeks before a full trail assessment can be completed. A complete list of trails, campsites and roads impacted by the storm is updated daily on the park's website. Visitors planning a trip to the park also can call (865) 436-1200 for updates. Great Smoky Mountains National Park is the most visited national park in the U.S., according to the National Park Service. July typically is the busiest month of the year, drawing more than 1.2 million visitors. Nearby, the Dollywood theme park in Pigeon Forge, Tenn. was not impacted by the storm and is open for business. Follow Gay Nagle Myers on Twitter @gnmtravelweekly.