Ep. 31: Ash and friends encounter Diglett interference at a dam construction site.
Aired on October 28, 1997

31
Lost in the mountains, Ash, Brock, Misty, and Pikachu hear an explosion and find a dam construction site. The foreman explains that Diglett are delaying work and he is hiring trainers to remove them. The reward for success is free travel to a luxurious natural hot springs. While observing the other applicants, Ash spots his rival Gary among the recruits. The group must navigate this unexpected challenge while trying to continue their journey through the difficult terrain.
Episodes
- Ep. 27 · Investigation into missing children and sick Pokémon linked to mysterious sleep wave
- Ep. 28 · Brock visits the renowned Coron salon amidst rising competition from Salon Roquet.
- Ep. 29 · Ash and Pikachu face Hitmonchan while the P1 Grand Prix competition descends into chaos.
- Ep. 30 · Pikachu falls ill in Gringy City as a blackout reveals Magnemite and Grimer
- Ep. 31 · Ash and friends encounter Diglett interference at a dam construction site.
- Ep. 32 · Ash faces ninja traps and Team Rocket at the Fuchsia Gym
- Ep. 33 · Ash rides injured Lara's Ponyta in a race against Dario's team at Laramie Ranch
- Ep. 34 · Ash and friends enter a protected Safari Zone preserve and meet a wild boy.
- Ep. 35 · Team Rocket challenges Ash to a Pokémon capture contest in the Safari Zone