Maze of Death is an underground labyrinth that protects the dwarven capital of Feo Berkana.
The Maze of Death is a long, twisting and branching series of caves. This is the final trial of the Trials to Feo Berkana.
This area is filled with vents which spewed plumes of volcanic gases at fixed intervals, and there were places where the gases collected. In other words, it is a hellish zone of invisible, fatal poison, lashed by fierce winds. There are several routes which led to the exit, but there was only one which did so and also avoided the gas. Even that route might end up being filled with gas if one did not traverse it quickly enough.