Located close to the gates of Phantom Manor, the Thunder Mesa Riverboat Landing acts as the embarkation point for two riverboats – the Mark Twain and the Molly Brown. Except on peak days, it is normal for only one of the two boats to be in operation at any one time.
The boats take guests on a tour of the Rivers of the Far West, travelling in a loop around Big Thunder Mountain. Several scenes dot the riverbanks, including waterfalls, caves and geysers. These help to tell the sorry tale of Thunder Mesa, the fictional town which Frontierland is themed around.