The Abyss

The Concordance of the Abyss

Copyright 1997 by Chris Nichols
Thanks also to Brian Biddick, Sean Curtin, Allan T. Grohe Jr, and William Northern
Last modified 20^th October 2005

* The Abyss: Index * Concordance * Layers * Burgs*
* View Another Plane *

The Abyss, also Demonholme to those of Ysgard, also Fiendholme to the Clueless of Krynn, also Jurgarten, meaning 'the misshapen lands,' to the elvish (seemingly infinite, unstable layers, possibly close to 900 in number, although that number changes. 703 mapped to date.)

(I) indicated an interdicted layer, RT a realm town, IT an independent town, Si a site. [*] indicates that the layer is one planned to be detailed at a later date. [#] indicates that the layer is a reworking of ideas found in the "Net AD&D Guide to the Abyss." {FoE} is Faces of Evil. (TGMM) is The Great Modron March. (AotA) is something mentioned in Green Ronin's Armies of the Abyss, and many of the layers are summarized here.

PRIMARY WATERWAYS

River Styx
River Pyriphlegethon

LAYER 1: PLAIN OF INFINITE PORTALS (The Howling Threshold, the Wasteland of Gates, Pazunia, the Palace of 1001 Closets, Jhaat)

IT: Battle Not With Monsters
IT: Broken Reach
IT: Edge of Sanity
IT: Mithrengo

IT: Raazorforge (ITA)
IT: Sonu-Aar'ri
IT: Styros
Re: Gallowsgate (Chemelosian's realm)

RT: Gallowsgate (ruled by Jaranda)

Si: Doomguard fortress

IT: The Fortress of the Fallen Stair (TGMM)
Si: Palace of the Princess of Pure Lust
IT: Anchortown (Slayer's Guide to Demons)
Si: Salt Mining Grounds (Slayer's Guide)
Si: Slave Mining Grounds (Slayer's Guide)
Si: Soul Mining Grounds (Slayer's Guide)
IT: Artifice (Jn'Nias' city; Slayer's Guide to Demons)
Si: Fortress of Ahazu the Seizer (AotA)
Si: Fortress of Aldinach of the Thirty-three Terrors (AotA)
Si: Fortress of Baltazo the Pitiless (AotA)
Si: Fortress of Laraie of the Unerring Bow (AotA)
Si: Dolorous Keep (Karlag�Fenzarl�s tower; by Morgan Barry)
Si: Lakes of Molten Iron

Si: Ferrug (MotP3)

Si: Tower of Chiryn (WoW)
Si: Xaos Kult Kamp (formerly near Plague-Mort: details in SIGIS issue 12)
IT: Amalrehtan (AotA)
Planar Path: The Styx

LAYER 2: "DRILLER'S HIVES" (layer of hivebroods)

LAYER 3: FORGOTTEN LAND

LAYER 4: GRAND ABYSS

Planar Path: The River Styx

Planar path: River Pyriphlegethon

Re: The Abyss of Ragnarok (Nastrond's realm)

Re: The Bottomless Pit (Abaddon's realm; AotA)

Si: Gulthrax

LAYER 5: "WYRMBLOOD" (I) discovered by Factol Jarkopple the Inflexible

RT: City of Caran

Si: Black Tower

Si: Iron Fortress

Planar path: River Pyriphlegethon

LAYER 6: REALM OF A MILLION EYES (Great Mother's realm)

RT: Failing Sight

LAYER 7: PHANTOM PLANE (KEARACKININ ) (Sess'inek's realm)

LAYER 8: "SKIN-SHEDDER" (I)

LAYER 9: BURNINGWATER (I)

LAYER 10: "THAT HELLHOLE" (I)

LAYER 11: MOLRAT (I)

LAYER 12: TWELVETREES

Si: Ship of Chaos (ITA)

LAYER 13: BLOOD TOR (Beshaba and Umberlee's realms; F&A)

Si: Gallowshill, the Fortress of Taramanda (Hellbound)

Re: Deathkiss Keep (Sorche's realm)

LAYER 14: A'SHAD'IFOHG

IT: A'Shad'Ifohg's Fall
Si: The Tower of Fangs

LAYER 15: THE COURTS OF MUSTERING (Gurtheoinr's domain, formally V'aughrosfl's; formally Chilravion's)

LAYER 16: THE ENDLESS GRAVEYARD

LAYER 17: THE WHISPERING LIGHTS (I)

LAYER 18: CARNAXIUS (Sekhmeth's Realm)

RT: Jerat

RT: Wysval

Si: The Pyramid of Destruction

Si: The Sleeping Forest

Planar path: River Pyriphlegethon

LAYER 19: FALSERAPTURE (I) (Realms of the Evangelist,the Heretic, the Crusader, and the Apostate)

Si: Library, Laboratory, and Monastery of Gresil

LAYER 20: CANDLESNUFF

LAYER 21: THRONE OF SKULLS (Khorne's Realm)

LAYER 22: EBON DEATH (Babau realm)

LAYER 23: IRON WASTES (Kostchtchie's, Kostchei's and Chernabog's realms)

Re: Tschyrtolikya

RT: Glacier Citadel

LAYER 24: TORPOR (Sleeping realm; A More Complete Guide to the Outer Planes, by Dave King)

LAYER 25: NIGHTMIRE (Realm of the Three; A More Complete Guide to the Outer Planes, by Dave King)
LAYER 26: MAGEBANE

LAYER 27: MALIGNEBULA (Lissa'aere the Noxious' realm; Hellbound)

LAYER 28: THE MOUNTAINS OF MURDER

LAYER 29: ROTTING CORPSE (Ghoul Realm) [#] [*]

LAYER 30: SLIMEFLOW

Planar Path: The Styx

LAYER 31: DESERTS OF STILL SILVER (I)

LAYER 32: THE DUNGEON DIMENSIONS (I)

LAYER 33: HOLLOWSHELL (I)

LAYER 34: COURT OF AESKYLOS (by Grodog)

LAYER 35: SENSELESS COURT OF SHABRIRI (by Grodog)
LAYER 36: ACID SCRUB

LAYER 37: THE FEEDING REACH (ZEGRENTILANDIB) (I)

LAYERS 38-40: COURT OF SCEIRION (by Grodog)

Si: The Keep of Rhieaz

LAYER 41: PERVERSION TRIUMPHANT (Slaanesh's realm)

LAYERS 42-43:TZARETCHUK(Realms of the Tzaretch)

LAYER 44: STORM (cataboligne layer)

LAYERS 45, 46 AND 47: AZZAGRAT (TRIPLE REALM) (Graz'zt's realm; For Duty and Deity)

RT: Argent Palace
RT: Zelatar
Si: Zrintor, the Viper Forest
Si: The River of Salt
RT: Samora
Si: The Counting House
Planar path: King's Road

LAYER 48: LAYER OF THE HUNT (Dance of Demons)

LAYER 49: THE HORRID SEA

IT: Sanspathos, the Lingering City

LAYER 50: THE OCEAN OF DESPAIR (Dagon's Realm)

LAYER 51: MA'ON, THE WINDS OF DEATH (Sammael's Realm)

Si: Keep of Walking Chaos

Si: The School of Terror

Si: Body Tower

Si: Chioa (Fortress of Eisheth Zenunim)

Si: Ruined world

LAYER 52: Vorgarund (Disputed layer; Dragon #341)

IT: Hykansk (Gnoll town)

LAYER 53: IMPALATOR (THE GLASS SPIKES) (I) [*]

LAYER 54: COURT OF MORFLOS (Absorbed layer; by Grodog)

LAYER 55: GLASS SHARDS (by Grodog)

LAYER 56: TIERS OF MYKHAZ (by Grodog)

LAYER 57: TORTUROUS TRUTH (Duke Alvarez's realm; FoE)

LAYER 58: THE TIERS OF PHELETHO (by Grodog)

LAYER 59: THE SILVER VOID (by Grodog)

LAYER 60: THE ELDRITCH HANDS (Unsere's realm)

LAYER 61: PLAINS OF THE DREAMER (Azoth's realm)

Si: King's Road (Planar path)

LAYER 62: STING (Chask and Maughter's realms)

LAYER 63: CHITINOUS (Mantha's realm) (I) [#] [*]
LAYER 64: DIZALAKINE, the Gate of Entropy (Raum's realm; AotA)

LAYER 65: LOLTH'S WEB (Lolth's realm, formerally Zanassu's realm)

LAYER 66: THE DEMONWEB PITS (Lolth's, Selvetarm's, and Keptolo's realm)

Si: The Chamber of Enlightenment (Lualyrr's "realm")

Si: Widow's Walk (Planar Handbook)

LAYER 67: HEAVING HILLS (Hezrou realm)

LAYER 68: UNNAMED (Void) (I)

LAYER 69: THE CRUSHING PLAIN (I)

LAYER 70: THE ICE FLOE (I)

LAYER 71: SPIRAC

LAYER 72: "DARKLIGHT" (I)

LAYER 73: THE WELLS OF DARKNESS (I)

LAYER 74: SMARAGD (Merrshaulk and Ramenos' realms)
Re: The Viper Pit (Sseth's realm; P&P)

Si: The Silent Temple (Planar Handbook)

LAYER 75: SRAOSHA (Azidahaka's realm; Armies of the Abyss)

LAYERS 76-77: unknown

LAYER 78: ZAHHAK, THE ASHEN WASTE (Realm of Apathy; Slayer's Guide to Demons)

Si: The Maw of Apathy

Si: The Pentad's fortresses

LAYER 79: THE CYANIC FENS (Dance of Demons)

LAYER 80: "THAT MISERABLE PLACE" [*]
LAYER 81: THELEMA (Socothbenoth's realm; AotA)

LAYER 82: JAHKLOUT (Dance of Demons)

LAYER 83: CIMMERIAN SHADE (Ahrimanes' Realm)

LAYER 84: XIBALBA

LAYER 85: ABLINIKARN, THE EVERSHIFTING VALE (Nocticula's Realm; AotA)

LAYER 87: SALT DESERT (The Balance Website, defunct)

LAYER 88: THE GAPING MAW (BRINE FLATS) (Demogorgon's realm; formerly Yam's realm)

Si: Abysm (Demogorgon's palace)

Planar Path: The Styx

Planar Path: River Nihilus

LAYER 89: DEMOZG (Demogorgon's realm)

Planar Path: River Nihilus

Planar path: River Pyriphlegethon

Si: Temple of Insanity

LAYER 90: GORGONASHK (THE STARS ARE BLOOD) (Demogorgon's realm; H4)

Planar Path: River Nihilus

RT: City of All Demons

LAYERS 91-95: unknown

LAYER 96: NOGARD

LAYERS 97-99: unknown

LAYER 100: THE TERRIBLE FORGE PRIMEVAL (Cabiri's Realm)

Planar path: River Pyriphlegethon

LAYERS 101: THE ENDLESS ENIGMA (by Grodog)

LAYERS 102-109: unknown

LAYER 110: THE MIND OF EVIL (Realm of Sch�theraqpasstt; Dragon #151)
LAYER 111: PLEROMA (Abraxas' Realm; AotA)

LAYER 112: STALKINGBONES (FONT OF SKELETONS) (I) [*]

LAYER 113: THANATOS (THE BELLY OF DEATH) (Kiaransalee's realm, formerly Orcus' realm)

Si: Desert of Bone Meal

Si: Lake of Fire (H4: Throne of Bloodstone)

Planar path: River Pyriphlegethon

Si: Valley of Crypt Things (H4)

Si: Skeletal Mountain (H4)

RT: City of Liches (H4)

RT: City of the Zombies (H4)

RT: Forbidden Citadel (H4)

Si: Ruins of Orcusgate (H4)

Si: The Great Mazes (H4)

RT: Naratyr, City of the Dead

Si: Calciniferous Palace

RT: Lachrymosa, the Cauldron of Tears

RT: City of Straight Curves (H4)

RT: The Bucking City (H4)

RT: The Flickering City (H4)

RT: City of Fire (H4)

RT: City of Ice (H4)

LAYER 114: OPEN GRAVE (I)

LAYER 115: SLOW DEATH (CAT'S MEOW; Planewalker.com)

LAYERS 116-119: unknown

LAYER 120: THE OFFAL PITS (THE MIDDEN) [#] [*]

LAYER 121: DEGRAZAZT

LAYER 122: FALSE FALLOW (IPONYSS'ITHYSS)

LAYERS 123-127: unknown

LAYER 128: THE SLUGBED (Lupercio's realm; FoE)

LAYER 129: TOWERS OF BLACK IRON (Tuchulcha's realm)

LAYER 130: SALONS OF PLEASURE (Soneillon's realm' by Grodog)

LAYER 131: THE INVERTED ZIGGURAT (Marduk's Realm)

Planar path: River Pyriphlegethon

LAYER 132: THE ABYSS OF FLAMES (Marduk and Ferror's Realm)

Si: Chaos Cube

Planar path: River Pyriphlegethon

LAYER 133: THE CONSUMING FURNACE (Marduk's Realm)

Planar path: River Pyriphlegethon

LAYER 134-141: unknown

LAYER 142: LIFEBANE (Chemosh's Realm, OHG)

LAYER 143: THE SHADOW FORTRESS (Iyaviht's realm; Slayer's Guide to Demons)

Si: Darkstone Keep

Si: The Shadow Isles

LAYERS 144-147: unknown

LAYER 148: TORRENT (Planar Handbook Web Enhancement)

LAYERS 149-155: unknown

LAYER 156: BOGGYWOOD [*]

IT: Abblerston

LAYERS 157-159: unknown

LAYERS 160: BROKEN CHILD (by William Northern)

LAYERS 161-164: unknown

LAYER 165: THE ETHERIA

LAYERS 166-175: unknown

LAYER 176: HOLLOW'S HEART (Fraz-Urbluu's new realm; FoE)

LAYERS 177-180: unknown

LAYER 181: ROTTING PLAIN (Laogzed's realm)

LAYERS 182-192: unknown

LAYER 193: VULGAREA (Eshebala's realm; OHG)

LAYERS 194-199: unknown

LAYER 200: VERMILHON, The Cataracts of the Fallen, also known as Just Rewards (Mastiphal's Realm)

Si: The River of Swords [*]

Si: Abandoned Watchtowers

LAYERS 201-220: unknown

LAYER 221: BLEKHOLE (I) [*]

LAYER 222: SHEDAKLAH (THE SLIME PITS) (I) (Jubilex's and Zuggtmoy's realms)

Re: Amoebic Sea

RT: Palace of Decay

Si: Juiblex's Grasp (Planar Handbook)

Si: Pneumuglug

Re: Thallphytia (Zuggtmoy's realm)

Si: The Putrescent Gorge (Slayer's Guide to Demons)

LAYER 223: RARANDRETH (OFFALMOUND) (Moander's realm; now Lolth's realm; F&A; OHG; DD)

LAYERS 224: MYCORGI (Zuggtmoy's former realm)

LAYER 225: DECAY (by William Northern)

LAYER 226: RESTARION, THE ROTTING PALACE (Sabnach's realm; AotA)
LAYERS 227-228: unknown

LAYER 229: LUCID DREAM (Curlonax's former layer; by Grodog)

LAYERS 230-232: unknown

LAYER 233: THE WRITHING ABYSS (Leviathan Realm) [*]

LAYERS 234-236: unknown

LAYER 237:THE PLAINS OF CHAOS

Si: The Citadel of Law (Altair's home)
Si: The Obsidian Cyst (the Bloodlord's home)

LAYERS 238-240: unknown

LAYER 241: PALPITATIA (Grankhul's and Skiggaret's realms; OHG)

LAYERS 242: THE SHIFTING LANDS (realm of Azael and J'angar, among others) [*]

LAYERS 243-244: unknown

LAYER 245: OCEAN OF SCREAMS (Planar Handbook)

LAYER 246: THE JOTUN PITS (Grodog)

LAYER 247: XALTA (by Grodog)

LAYERS 248-259: unknown

LAYER 260: THE GREEN ABYSS (Alrunes' realm) [*]

LAYERS 261-265: unknown

LAYER 266: ACID INDECISION (Tel'Quay's realm)

LAYERS 267-273: unknown

LAYER 274: DURAO (gateway layer)

Si: Gluttonous Depravity, the Citadel of Feasting

LAYERS 275-287: unknown

LAYER 288: DARK OASIS
LAYERS 289-294: unknown

LAYER 295: DESOLATE (by William Northern

Si: Army Training Camp (Lord Hugh's domain)

LAYER 297: THE SIGHING CLIFFS (Lynkhab's realm; FoE)
LAYER 298: ABYSS OF BOILING OIL (1000 Hells)

LAYER 299: ABYSS OF BURROWING MAGGOTS (1000 Hells)

LAYER 300: FENG-TU (Tou Mu and Lu Yueh's realm)

RT: Feng-Tu, City of Disease and Madness
Si: Keui-Men-Kuan, Gate of the Demons
Si: How Nai-ho (river)
LAYER 301: ABYSS OF UPSIDE-DOWN SINNERS (1000 Hells)

LAYER 302: ABYSS OF SEVEN BURNING SEAS (1000 Hells)

LAYER 303: SULFANORUM

Re: The Red Pits of Sulfanorum (Ballock's realm)

Planar path: River Pyriphlegethon

LAYER 304: THE SCARLET PATH (1000 Hells)

LAYERS 305-309: unknown
LAYER 310: DAMERTH (Site is in Hungarian)

LAYER 311: THE ENDLESS CAVERNS

LAYER 312: THE FINAL HIGHWAY (Seere's realm; AotA)
LAYER 313: UNNAMED

Si: Illssender's Tower (Hellbound)

LAYERS 314-316: unknown

LAYER 317: THE TERMINAL ARCHIVE (Astaroth's realm; AotA)

LAYERS 318-323: unknown

LAYER 324: THEIVUKASH (Stromckkuk's realm) [#] [*]

Si: Plains of Severed Hands

Si: Stromckkuk's Hill-fort

LAYERS 325-332: unknown

LAYER 333: THE BROKEN SCALE (Hiddukel's realm; OHG)

LAYER 334: UNNAMED (Eldanoth's realm; formally Orcus'?)

LAYERS 335-336: unknown

LAYER 337: A'azax (Ythigart's realm; by Smeazel)

LAYERS 338-339: unknown

LAYER 340: UNNAMED (A cold, desolate, voidlike place; Faction War)

LAYERS 341-344: unknown

LAYER 345: FYERWOLD

Planar path: River Pyriphlegethon

LAYER 346: LAIR OF SEMI-DEMONS (Throne of Bloodstone)
LAYER 347: CHARNELHOME (Shax's realm; AotA)

LAYER 348: UNNAMED (Formerly Thralhavoc's realm)
Si: Taelec Mirrimbar, the Fortress of Indifference (Tapheon's stronghold; Hellbound)

LAYERS 349-351: unknown

LAYER 352: THE INCESSANTLY SUBLIME COURT (Obox-Ob's realm)

LAYERS 353-355: unknown

LAYER 356: AENAGADE

Si: Stronghold of the incubus Vile Rose

LAYERS 357-361: unknown
LAYER 362: GHORNE (Dagoth's former realm; Realms of Infernus)

LAYER 363: THE LIVING SEA

LAYER 364: THE CAVERNS OF CHAOS (Anarazel's realm; AotA)

LAYER 365: KOLOPAN, THE SEETHING PASSAGE (Vepar's realm; AotA)

LAYER 366: AZGOROTH (Ojukalasogadit, the living layer)

LAYERS 367-373: unknown

LAYER 374: PLAINS OF GLASS AND TORMENT

LAYERS 375-376: unknown

LAYER 377: PLAINS OF GALLENSHU (armanite realm)

RT: Blackmane (one of twenty-four stable-towns in the layer)
RT: Oxblood (also a stable-town)
RT: Amber
RT: Basalt
RT: Boneshard
RT: Clay
RT: Bloodstone
RT: Broken Glass
RT: Carrionheap
RT: Jagged Edge
RT: Jet Ichor
RT: Shale
RT: Stagnant
RT: Cold Iron
RT: Dark Spring
RT: Gray Glass
RT: Jade
RT: Mageblood
RT: Maroon
RT: Obsidian
RT: Ochre
RT: Purpure
RT: Silver Spike
RT: Steelshank
RE: Brokenhoof (Armat's realm)
IT: Bleeding Head

LAYER 378: unknown

LAYER 379: FORCED HAND

LAYER 380: unknown

LAYER 381: BODAK'S LAYER

LAYER 382: unknown

LAYER 383: GLABHELROR, the Abyss of Howlings (Glabrezu realm)

LAYERS 384-386: unknown
LAYER 387: WINGED DARKNESS (Ephialtes' realm)

LAYER 388: MALDINACH, the Desert of Broken Dreams (Azazel's realm; AotA)

LAYER 389: PIBIUS (The Abyss of Happy Pink Clouds)

LAYER 390: THE HINGED PLAIN (THE CLAP) (I) [*]

LAYERS 391-393: unknown

LAYERS 394-397: unknown

LAYER 398: ROOT OF ALL EVIL

RT: Greenspawn

LAYER 399: WORM REALM (Urdlen's realm)

LAYER 400: WOEFUL ESCARAND (nalfeshnee realm)

Si: The Mountain of Woe
Si: The Pits of Depair

LAYER 401: BLACK REGULUS (nalfeshnee and alastor realm; AotA)

LAYER 402: unknown

LAYER 403: THE RAINLESS WASTE

IT: Mal Arundak, the City of Confusion (Fallen archon realm; FoE)

LAYERS 404-407: unknown

LAYER 408: THALERIAK, THE FOREST OF NIGHTMARES (Tyrel's realm)

LAYER 409: WORMGRAVE (Ereshkigal's Realm) [*]

LAYERS 410-420:unknown
LAYER 421: SALTED WOUND (Realm of the King of the Ghouls, vassal of Yeenoghu)

LAYER 422: THE SEEPING WOODS

Re: The Seeping Woods (Yeenoghu's realm)
Re: Palace of Ill-Omen (Ma'azbert's realm)

LAYER 423: SMOLDERING WASTE (Zalintar's realm)

LAYERS 424-425: unknown
LAYER 426: INSANE ILLITHID ELDER BRAIN (I)

LAYER 427: DJAHANNAM (Eblitis' realm) [*]

LAYER 428: ZANDAKURA, [LIVING DESERT] (home of SHRIAXIT's and their lords)

LAYER 429: ANAGON (Realms of Anaroggg and Armon)

LAYER 430: FATAL BLEEDING (I) (The Balance Website, off-Mimir)

LAYER 431: CHAOTIC MEMORIES (I) (The Balance Website, defunct)

LAYER 432: SURFACE (I) (by William Northern)

LAYER 433: ACID OCEAN (I) (The Balance Website, defunct)

Si: The sea of dissolution

Si: The sea of hallucination

Si: The Sardonic Deeps

Si: The Devil's Library (Ambrose's kip)

LAYER 434: SHRIEKING LANDS (HOUSE OF MASKS) (I) [*]

LAYERS 435-447: unknown

LAYER 448: THE GREAT BORDELLO (Syliviana's realm) [#] [*]

LATERS 449-450: unknown

LAYER 451: THE BURNING LIBRARY (Whuzzat's realm)

Planar path: River Pyriphlegethon

LAYERS 452-461: unknown

LAYER 462: THE ATROCITY CAVERNS (I) [*]

Re: Maw of Atrocity (Aunkaatr's realm, abandoned; a dead god of the meazels)

LAYER 463: TEHOM (Netbook of Witches and Warlocks)

LAYER 464: ABYSS OF ICE CREAM [*]

LAYER 465: HALLS OF THE WHISTLER [#] [*]

LAYERS 466-470: unknown

LAYER 471: SUCCUBI WOMB (THE FLESH PITS) (I) [*]

LAYER 472: PARTIS (Terror's Rain) (Rosipeer's realm; by Nerrin)

LAYERS 473-486: unknown

LAYER 487: LAIR OF THE BEAST AND MANSION OF THE RAKE (Kanchelsis' realm; OHG)

RT: Feast Upon the Herd

LAYER 489: NOISOME VALE (Tarnhem's realm; deserted; Dungeon Builder's Guidebook)

Si: Tarnhem's Manor
Si: The River of Worms

Layers 490-492: unknown

LAYER 493: SLEEPLESS (Siragle's realm; Dungeon #28)

LAYERS 494-498: unknown

LAYER 499: CARRORISTO (Hellbound)

Si: The Iron Fortress of Carroristo (Hellbound)

LAYER 500: VOLCANOES OF GOTHMOG (by Grodog)

Planar path: River Pyriphlegethon

LAYER 501: PARADISE DEFILED (Ochremeshk's realm)

Planar path: River Pyriphlegethon
LAYER 502: THE JOVIAN MINEFIELDS

LAYER 503: TORREMOR (LAYER OF FLIES) (Pazrael's realm)

Si: Onstrakker's Nest

LAYERS 504-522: unknown

LAYER 523: LAKE OF FIRE (Theological quandry; by Greg Jensen)

Planar path: River Pyriphlegethon (Guarded on this layer by warden archons)

LAYER 524: SHATTERSTONE (Vaprak's realm, OHG)

LAYERS 525-529: unknown

LAYER 530: KAZUM, THE CITY OF THE PIT [*]

LAYER 531: VUDRA (Marilith realm, Dungeon #60)

LAYER 532: ISLE OF THE APE (Mandrillagon's realm)

LAYER 533: THE ENDLESS TORTURE (Bar-lgura realm)

Si: Plains of Pain
LAYER 534: THE BLOODPYRE FIELDS (Flauros' realm; AotA)

LAYER 535: THE LANDLESS AERIE (Decarabia's realm; AotA)

LAYERS 536: THE FAIR DECEPTION (SIGIS 17) (tNAA)

IT: Madness

Si: Ocean of Woe

Si: the Gaming Fields

Si: the Perch

Si: Tornado Forest

Si: Tower of Corruption

LAYERS 537-545: unknown

LAYER 546: THE NIGHTMARE CAGE (J'sald-Xerix's realm) (I) [#] [*]

LAYERS 547-550: unknown

LAYER 551: JINXLAND (Abyss of gremlins and Asima's Realm)

LAYER 552: THE BLOOD MOON (Aseroth's realm)

LAYER 555: MAGGOTLOCH (I) [*]

LAYER 556: THE FESTIVE EVERLASTING (Ipos' realm; AotA)

LAYER 557: SHADOWS OF NEVER-WAS

LAYERS 558-559: unknown

LAYER 560: DEMISE (Soluman's Anguish) (By William Northern)

LAYERS 561: SHADDONON (Layer of Rhyxali, Princess of Shadow)

562-564: unknown

LAYERS 565: SANDSLIDE (THE FALLING DESERT) (I) [*]

LAYER 566: SOULFREEZE

Si: Gateway to Paraelemental Ice (The Inner Planes Sourcebook)

LAYERS 567: BLOODFIELD [*] (Areex's Realm)

LAYER 568: THE ETERNAL LISTS (Eligor's realm; AotA)

LAYERS 569-571: unknown

LAYER 572: MORTALUS (Mors' realm)
LAYER 573: PLAGUE

LAYER 574: THE WITHERING MANGROVE (by Brian Biddick)

LAYER 575: AWASH (I)

LAYER 576: THE SOAKING CANYON OF MALIGNANCY (Marbas' realm; AotA)
LAYERS 577-585: unknown

LAYER 586: PRISON OF THE MAD GOD (Diinkarazan's realm)

LAYER 587: GRAVE WISDOM (B. Mooney)

LAYERS 588-589: unknown
LAYER 590: STORMWINDS

LAYERS 591-591: unknown

LAYER 592: THE BLACK VORTEX (Dance of Demons)

LAYER 593: PARCH (Mot's realm)

LAYER 594: THE MISTLANDS (Bale and Ardat's realms)

LAYERS 595-596: unknown

LAYER 597: PRIVATE PERSECUTION (By William Northern)

LAYER 598:unknown

LAYER 599: THE SOULESS SOUNDING (DoD)

LAYER 600: ENDLESS MAZE (SHUBGOETIA) (Baphomet's realm, OHG)

Si: Pale Night's claw fortress (FoE)

Re: Sea of Treachery (Canonfire!)

Re: Sea of Confusion (Canonfire!)

Re: The Dark Wood (Canonfire!)

Re: The Terror Caves (Canonfire!)

Re: Forest of Frenzies (Canonfire!)

Re: The Underkingdom (Canonfire!)

Si: Mystery Caves (Canonfire!)

Si: Palace of Knossus (Canonfire!)

LAYER 601: CONFLAGRATUM (Alzrius' realm, Hellbound)

Planar path: River Pyriphlegethon

LAYER 602: CEREBULIM - THE HERMETIC HORIZON (Haagenti's realm; AotA)
LAYERS 603-611: unknown

LAYER 612: PURGATION

LAYER 613: MORGONAUGH

IT: Ber-Gorgan
LAYER 614: ACID SNOW

LAYERS 615-621: unknown

LAYER 622: ENGULFING ABOMINATION (I) [*]

LAYER 623: THE REALM OF CHAOS

Si: The Lake of Blood
Si: The Cathedral of the Damned
Si: Spires of the Arachnos
LAYERS 624-630: unknown

LAYER 631: LABYRINTH

LAYER 635: DUIDAN (Behemoth's Realm; AotA)

LAYER 636: unknown

LAYER 637: CARYNACH, The Empty Place (no portals in or out; by Grodog)

LAYERS 638-641: unknown

LAYER 642: THE RED JUNGLE (Kali's realm)

LAYER 643: CAVERNS OF THE SKULL (I) (Kali's realm)

LAYERS 644-649: unknown

LAYER 650: THE TIMEPIECE INFERNAL

LAYERS 651-655: unknown

LAYER 656: HELLGATE (by Grodog)

LAYER 657: THE STEAMING FEN (Rod of Seven Parts)
LAYERS 658-664: unknown

LAYER 665: OPEN MAW (The Blood Wars trilogy; name by William Northern)

LAYER 666: DELETERIOUS COVENANT (Abraxas' Realm) [*]

LAYERS 667: LAYER OF EVIL INCARNATE (I) (also called the 666^th) [*]

Si: The Terminus, Portal to "The Secondary Abyss"

LAYER 668: LAYER OF CHAOS INCARNATE (Realm of Ushablator the Chaos Horror) (I) [*]

LAYER 669: ANNIHILATION (Spheres of Darkness) (I) [#] [*]

LAYER 670: THE CRUMBLING HELL (I) [*]

LAYER 671: NETHURIA, THE ABYSS OF CHAINS (Vucarik's realm) (I) [*]

RT: Mustering of Juggernauts

RT: Iron Liberation

LAYER 672: RIFT OF CORROSION (3e DMG; Monte Cook)

LAYERS 673-677: unknown

LAYER 678: FANTASIA

RT: Deocide
LAYER 679: DRAGGONNARA [THE LIVING REALM]

LAYER 680: VOLGAUTH (Armegeddon beasts; AotA)

LAYERS 681: THE FOUNDATION (Realm of the Foundation; Slayer's Guide to Demons)

LAYER 682: unknown

LAYER 683: TUTIOLTH (I)

LAYERS 684-698: unknown

LAYER 699: ALL THINGS UNPLEASANT

LAYER 703: GALLERY OF AGONY (Litat's realm)

LAYERS 704 and DOWN: Unknown
WANDERING LAYER: THE RIVER OF LAND (Salafin's realm; uncatalogued)

WANDERING LAYER: DEMONWING (Demogorgon's former realm; uncatalogued; A Paladin in Hell)