BOZ
Creature Cataloguer
I thought of another theme to exploit. 
Now, I'm not looking for a list of Abyssal *layers* - we've got that well-established already. (though a notation should be made of where individual layers are described in books)
What I want to see is a notation of *location, location, location!* you know, places that can be found somewhere within the vast plane. You know, a demon lord's fortress, the location of a famous battle, the capital city of a god's realm, etc.
I took the trouble of digging out a few obvious locales from the Planes of Chaos boxed set (IMO, one of the best features of Planescape was the way it fleshed out planar locations...), so the rest of you all can pull up some other stuff from other places, obscure or not-so.
The Plain of Infinite Portals (Planes of Chaos, Travelogue, p 10)
Zrintor the Viper Forest (Planes of Chaos, Travelogue, p 13)
Naratyr, the City of the Dead (Planes of Chaos, Travelogue, p 14)
Various Planar Layers: Realm of a Million Eyes, Phantom Plane, Twelvetrees, Blood Tor, Iron Wastes, Lolth's Web (The Demonweb Pits), Smaragd, Gaping Maw, Rotting Plain, Shedaklah, Durao, Sulfanorum, Worm Realm, Woeful Escarand, Yeenoghu's Realm (here unnamed), Prison of the Mad God, Caverns of the Skull (Planes of Chaos, Book of Chaos, p 20-23)
The Plain of Infinite Portals (again; Planes of Chaos, Book of Chaos, p 23-24)
Broken Reach (Planes of Chaos, Book of Chaos, p 25)
The Ship of Chaos (Planes of Chaos, Book of Chaos, p 26)
Azzagrat (Planes of Chaos, Book of Chaos, p 26-28)
Thanatos, the Belly of Death (Planes of Chaos, Book of Chaos, p 29-31)
Plains of Gallenshu (Planes of Chaos, Book of Chaos, p 31-32)
Torremor (Planes of Chaos, Book of Chaos, p 32-33)

Now, I'm not looking for a list of Abyssal *layers* - we've got that well-established already. (though a notation should be made of where individual layers are described in books)
What I want to see is a notation of *location, location, location!* you know, places that can be found somewhere within the vast plane. You know, a demon lord's fortress, the location of a famous battle, the capital city of a god's realm, etc.
I took the trouble of digging out a few obvious locales from the Planes of Chaos boxed set (IMO, one of the best features of Planescape was the way it fleshed out planar locations...), so the rest of you all can pull up some other stuff from other places, obscure or not-so.

The Plain of Infinite Portals (Planes of Chaos, Travelogue, p 10)
Zrintor the Viper Forest (Planes of Chaos, Travelogue, p 13)
Naratyr, the City of the Dead (Planes of Chaos, Travelogue, p 14)
Various Planar Layers: Realm of a Million Eyes, Phantom Plane, Twelvetrees, Blood Tor, Iron Wastes, Lolth's Web (The Demonweb Pits), Smaragd, Gaping Maw, Rotting Plain, Shedaklah, Durao, Sulfanorum, Worm Realm, Woeful Escarand, Yeenoghu's Realm (here unnamed), Prison of the Mad God, Caverns of the Skull (Planes of Chaos, Book of Chaos, p 20-23)
The Plain of Infinite Portals (again; Planes of Chaos, Book of Chaos, p 23-24)
Broken Reach (Planes of Chaos, Book of Chaos, p 25)
The Ship of Chaos (Planes of Chaos, Book of Chaos, p 26)
Azzagrat (Planes of Chaos, Book of Chaos, p 26-28)
Thanatos, the Belly of Death (Planes of Chaos, Book of Chaos, p 29-31)
Plains of Gallenshu (Planes of Chaos, Book of Chaos, p 31-32)
Torremor (Planes of Chaos, Book of Chaos, p 32-33)