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“It's not fair..."
―Thomas and Gordon at Tidmouth Sheds, about to go to sleep at night.

The Other Side of the Mountain is the twenty-third episode of the nineteenth series.


Thomas enjoys nothing more than racing Bertie on his branch line, but one day, Thomas discovers that Bertie is not travelling along with him on the road. He eventually meets up with him at Ffarquhar, and Bertie explains that he has to take a different route which is on the other side of the mountain, since men are reconstructing the route he usually takes. Bertie tells Thomas that there are beautiful trees, sparkling waterfalls and a rainbow. Thomas wonders if what Bertie says is true, but is sad to know that he cannot see it all since his rails will not guide him to the other side of the mountain.

Throughout Thomas' journey, Bertie consistently teases Thomas with the fact that he cannot see what is on the other side of the mountain, and everyone tries to convince Thomas that Bertie is making it all up.

However, the next day, when Thomas meets Bertie at the level crossing with a goods train, Bertie tries to tell Thomas that what he said is not made up. But before he can explain what he meant, Thomas puffs away in a very bad temper, believing that Bertie was teasing him all along. Thomas is so cross that he does not see a red signal, and the signalman warns Thomas that he will have a collision with Toby. Thomas tries to stop, but the troublesome trucks surge forward and push him into a set of points that are set against him, derailing him and causing him to run through the countryside close by the road. The Fat Controller arrives at the scene and is very cross.

Butch arrives to take Thomas to the Steamworks by road since he derailed far away from the tracks. He then takes him to what apparently is the route Bertie was taking all along, and Thomas soon discovers that the "junglely trees, the sparkling waterfalls, and the rainbow" on the other side of the mountain is actually a billboard. He then apologises to Bertie at the Steamworks and learns that he was not making it all up after all. Thomas still has one joke left, and everyone laughs when he suggests that Victor could fix him some wings.





US and CAN

  • Joseph May as Thomas
  • Kerry Shale as Gordon and Kevin
  • Christopher Ragland as Percy and the Troublesome Trucks
  • Jules de Jongh as Emily
  • Teresa Gallagher as Annie and Clarabel
  • Keith Wickham as Bertie, Sir Topham Hatt and a Signalman
  • Steven Kynman as Butch


  • Bertie's theme originally composed by Mike O'Donnell and Junior Campbell can be heard near the beginning of the episode.
  • This is the first episode since the twelfth series episode, Percy and the Bandstand, where a member of the Sodor Construction Company, in this instance Jack, appears in an episode in the main television series. It is also his only appearance in the nineteenth series.
  • This episode marks Butch's last speaking role.
  • This is the first episode in which Jack appears but does not speak.
  • The fantasy for this episode would later be refurbished for the twenty-second series episode, Cyclone Thomas.
  • This is the second time Thomas is carried by a road vehicle since the Pack episode, Percy Helps Out. However, if Railway Series stories were counted, this would be the third occasion, the first being Not the Ticket.
  • On the Nick Jr. US airing of this episode, it was paired with Who's Geoffrey?.
  • In the Estonian, Latvian, Lithuanian, Baltic Russian and Vietnamese dubs, UK dub can be heard in the background as a dubbing track was not used.


  • David Bedella is credited in the UK credits, despite none of his characters speaking in the episode.

In Other Languages

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Language Title
Brazilian Portuguese O Outro Lado da Montanha
Dutch De Andere Kant van de Berg
Italian L'altro Versante della Montagna
Japanese やまのむこうがわ
Korean 저 산 너머 무지개
Latin American Spanish Al Otro Lado de la Montaña
Polish Po Drugiej Stronie Góry

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