What does the emergency structure become in Pokémon Pokopia’s ending?

In Pokémon Pokopia’s ending, the emergency structure becomes a rocket ship.

After Ditto and Professor Tangrowth restore habitats and complete the Team Initiation Challenge, they celebrate with party poppers. The celebration accidentally activates an emergency evacuation protocol, revealing that the structure is designed to launch into outer space.

The rocket eventually encounters a human, implied to be Ditto's original trainer, who recovers items sent from the Pokémon world. This ending connects the abandoned landscape to the game's mystery about humanity's disappearance. The structure is therefore more than a tower or challenge site: it is an evacuation vehicle tied to the story's space-travel explanation.