Verdant Cavern (Japanese: 茂みの洞窟 Verdant Cavern) is a location in Alola on the north side of Melemele Island, located off Route 2.
Ilima will be the player's guide to their trial here, the first trial in the island challenge. In the trial, the player must first defeat three Pokémon hiding in their dens around the cavern. After that, they must enter a deeper part of the cavern and face a Totem Pokémon: Gumshoos in Pokémon Sun or Alolan Raticate in Pokémon Moon. If the player defeats the Totem Pokémon, they will be able to claim a Normalium Z.
Until the player has completed the trial, they will not be able to capture Pokémon or be allowed to leave.