Somewhere in the Pacific Ocean is an island, surrounded by a swamp filled with the carcasses of fish and other, less recognizable things poking out of the mud. The mire extends as far as you can see. Every so often, the mud will be dry enough under so that you can walk on it. About a day's travel from shore is a large mound, at the top of which is an immense canyon, the bottom of which cannot be seen, although if the moon is large enough you will be able to see the slope of the canyon, and eventually the bottom, which is covered by a strange body of water. Rising from the water is a monolith, which is covered in bas-reliefs.