Manual of the Planes

[Corwin]

Earth. Earth, stone and soil are all around you. You stand in pitch blackness, only your light providing any illumination. The air is terribly musty here and thin, yet you find yourselves breathing easily. A small cavern, large enough for the five of you to stand and little else. Heavy gray, brown and tan rock forms the walls, natural looking bands of it.

[Corwin]

"Within the Negative Energy Plane lies the Castle Crumbling, a redoubt of the Arch-Devil of the Undead, Lixer. Within this gloom lies unholy experiments and nightmares bred to terrorize all Creation." Log 019.
"Be wary." Chan continues, "Lixer is the son of Asmodeus, and only slightly less favored than Glasya. His servants are not weaklings."  Log 019.