Accessible through the [[Teleportation Machine]] using code 0025, the Yellow Room contains a ring collection minigame quest that awards high rarity level 90 items, as well as 3 chests containing high rarity level 90 items with a 3-day cooldown. This room also has portals that exit to the Penguin Maze (top) and Deep Caves (middle).

Down a ladder east of the skill trainers is a cave system full of enemies from many other parts of the game but as level 90 Deep versions. This area connects to the Forthagarian Caves and the Tiger Maze/Lady Room. [[Yellow Room]] has a portal to the [[Wizard Globe]] in the southeast corner, which has a quest requiring drops a drop from [[Lady Eleanor]] and an item from the Gilded Lockbox in the [[Tiger Maze]]. [[Terry Yginix]] can be found in the Tentakillersouthwest corridor, and behind him are the strings needed for the harp in [[Tiger Maze]]. The [[Dice Bunny]] puzzle is also in this area which awards the key to the Gilded Lockbox in [[Tiger Maze]]. In the southeast corner is the Wizard's Globe, a teleportation machine that runs on [[Striped Pebble]] and allows for teleportation into the [[Yellow Room]] with the right code.

The first side passage south from the skill trainers in the Deep Caves leads to the Door of Fate which can be changed between Tiger and Lady with the nearby lever. The Tiger maze is filled with [[Brutal Tiger]] and [[Mangler Scorpion]] (need knockback to damage) and connects to [[Ship In A Bottle]]. This area also contains the harp that can be repaired with strings from the [[Deep Caves]], and the Gilded Lockbox containing the [[I forget what it's called]] to repair the Wizard's Globe. The [[Mask of Authority]] in the [[Ship in a Bottle]] room allows you to exchange 10 [[Letter of Authority]] for a random [[Nightmare Caves]] skillbook or recipe.

This area of the caves contains the boss [[Lady Eleanor]]. This area can be accessed with the [[Teleportation Machine]] using code 0066, which can allow you quick access to [[Tiger Maze]] and subsequently [[Ship In A Bottle]] by exiting and re-entering the Door of Fate after using the lever provided you can take down [[Lady Eleanor]](and have a key for the bottle, it's easier to teleport in). Lady Eleanor's room also contains the broken Stargazer, which can be repaired with an item from [[Terry the Tentakiller]] in the [[Tiger Maze]]. Repairing this will give you a hint for the code to teleport into the Yellow Room at the Wizard's Globe.