The Inferno is an important area, despite being behind a locked door. Mumbo's Skull is found inside, and his magic is required to power up several attractions in the park. It also has a long spiral structure in the center with a Jiggy at the top. Banjo and Kazooie must Split-up in order to obtain the Jiggy. It contains a Warp Pad, mainly for Mumbo to get out quickly and power up the other areas. Finally, The Inferno is where the player will find Groggy which Banjo must feed with a Burger and Taxi Pack back to his mother Mrs. Boggy as part of a quest to obtain a Jiggy.
- If the player comes back to The Inferno as Van Banjo, they can go through the Van door inside and get a Cheato Page.
- The lava inside The Inferno will not harm Van Banjo.
- When images of The Inferno were first shown, it was believed that it was located in Hailfire Peaks.
- Mumbo's Skull in The Inferno is similar to the one in Hailfire Peaks.