New Mauville is an underground amusement park for children. Its entrance is located on Route 110, near Mauville City. For a long time, the knowledge of its entrance was lost.

It is also known as the Phantom City or the Phantom Underground City.

It debuts in Chapter 203 as Sapphire swinging around in darkness.

Significant Events



New Mauville was built long ago by the ancestors of the residents of Mauville City. Because of the space shortage in Mauville City, New Mauville was built for children to have fun in.


Entrance to New Mauville

It is later used as a shelter for many people in Hoenn against the forces of Kyogre and Groudon.[2]



  1. Pokémon Adventures: Chapter 235
  2. Pokémon Adventures: Chapter 235

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