From Bulbapedia, the community-driven Pokémon encyclopedia.
The Go-Rock Squad Base (Japanese: ゴーゴーだんアジト Team Go-Go Hideout) is the location of the ninth mission in Pokémon Ranger. It is hidden within the Sekra Range.
The player is sent there to infiltrate the base as a distraction. It is the location of the final confrontation with the Go-Rock Quads. After all four have been defeated, they blow up the base and escape, making it only possible to enter the first few rooms on return visits.
This is a listing of the Pokémon found in the Go-Rock Squad Base after the credits: