Grimjaw's Treasure Hold is a series of tunnels and caverns, either natural, or built by Grimjaw Slugface, to store his pirate treasure, with the entry way on Scumbucket Island. It contained many traps and puzzles, but also a piece of Karpath's Map, as well as many gold bars, some golden armor, and golden apples.
The golden-toothed skull bears a striking resemblance to Skull Pass.
Honeydew and Xephos, seeking Verigan's Map fragment, sought out help from Isabel Peculier, a pirate. She sent them to the Treasure Hold, where they met Pirate Tinman, Isabel's first mate. With his aid, they navigated the traps and puzzles. One puzzle, however, ended with Tinman stranded on the other side of a pit of lava. The heroes then found a maze, with a giant skull with golden teeth on the other side. The navigated the maze, which was filled with spiders and ghasts, to find that Tinman had beaten them to the skull, which contained, not the treasure they expected, but a disc, that Tinman had made, a recording of Jock Fireblast, who was previously thought to be an ally, stealing the map piece. They did not, however, come out empty handed, as they did steal some of the golden teeth. They exited the maze, ending up in a desert ruin. Only later did they learn that Tinman had stolen a large amount of gold and treasure out from under their noses.