This route follows the Little Pigeon River to Trillium Gap. No trucks, trailers or RVs are allowed. The road leads to the John Messer Barn and the trailhead to Ramsay Cascades, arguably the best waterfall in the Park. The hike is 8 miles roundtrip and is challenging. A lesser visited area of the Park, the Greenbrier section is one of our favorites. Besides the Ramsay Cascades, the visitor has the opportunity to view large stands of virgin growth such as northern red oak, eastern hemlock, and red maple. In fact, the Great Smoky Mountains are home to 21 champion-size trees. When the Park was created in 1934, old-growth forests were saved from the lumber companies and preserved for Smokies visitors. To get to Greenbrier Road, leave Gatlinburg at light #3 and head east on Hwy 321. Travel for approximately 7 miles and turn right on Greenbrier Road. If you include the hike to Ramsay Cascades, expect this tour to take upwards of 5 hours.