Belly Button Cave (Japanese: ヘソのほら穴Belly Button Cave) is a stage in Pokémon Quest that is located in Tumblecube Island. It is unlocked once the player completes all stages in Gloomy Grove and Backforth Brook. Completing all stages of Belly Button Cave rewards the player with the Gentle Breeze Statue which increases experience gained from expeditions by 1.5 times for Pokémon up to Lv. 25.
Water-type Pokémon have a boost in their HP and Attack when playing these stages.
