Thunderhead is a wooden roller coaster located at Dollywood amusement park in Pigeon Forge, Tennessee. The coaster, which was the anchor attraction of the new "Thunderhead Gap" section (now Timber Canyon), opened on April 3, 2004, to much critical acclaim. Thunderhead boasts 22 turns and 32 crossovers, and utilizes GCI's Millennium Flyer trains, used on all GCI coasters since 1999. Thunderhead is also the first roller coaster to feature a station fly-through.