|This location exists primarily or exclusively within the Pre-Super Genesis Wave continuity.|
Information in this article may not be canonical to the storyline of the games or any other Sonic continuity.
It was used as a secret base by Snively and a group of other convicts after their escape from the Devil's Gulag. Sonic the Hedgehog and members of the Royal Secret Service traveled to Big Kahuna Island via a submarine to retrieve Nate Morgan, who had been captured by Snively and his goons. (StH: #68, #70)