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Avernus was the first layer of the Nine Hells of Baator.[8][9][10] The most likely beachhead for any attack by demon-kind,[11] it was the primary battleground of the Blood War: legions of devils marched across its plains in continual readiness to repel the hordes of demon invaders that sailed the River Styx into the layer.[9][10]

Avernus welcomes all.
— Geryon, repeating an old saying[12]

Geography[]

Avernus was the largest layer of Baator and one of the most traditionally infernal—a blasted hellscape in the most literal sense filled with rivers of lava, barren hills, and low, rocky mountains as far as the eye could see.[3][6] To scale the mountains or move too quickly was unwise at best, since obsidian, quartz, and other crystals jutted from the jagged land, cutting clothes and slicing flesh.[3][13] The ubiquitous presence of rocks and boulders, some of which seemed to resemble tormented faces and shapes of creatures, rendered the terrain extremely treacherous and difficult to cross at any pace quicker than a fast walk. Rubble covered the vast, ashen plains of Avernus's charred wastes,[9][14][15] dotted with bubbling tar pits, sucking quicksand, lakes of lava, and salt flats made from the tears of the damned.[16]

Zariel in Avernus-5e

Zariel flying across the wastelands of Avernus.

Fireballs raced across the dark sky of Avernus, seemingly at random (but on closer inspection actively targeted motion), and fell to the scorched earth, leaving smoking impact craters and burnt corpses in their wake.[13][17] Travelers would need to find shelter, such as a building or cave, lest they inevitably be struck.[9] The acrid air was clouded with pumice and volcanic ash from the foul fumaroles and blighted with swarms of flies.[6][17] Roiling clouds of red and black flickered with orange flames[6] but the atmosphere had neither sun nor stars, only a constant, blood-red light that suffused the air.[3][9][14][13][15]

Blood, as it would happen, was the leitmotif of Avernus; it was where the River of Blood ran through Baator, collecting rivulets from every gulch, stream, and pool, from the victims of millions of battles.[3][13] Practically all of the plane was bathed in a coat of blood and covered with bones and gore, whether devilish, demonic, or otherwise, acting as a grim reminder of the regular bloodshed that marked an average day in Avernus.[3][13][17]

Cosmography[]

As with all the lower planes, the River Styx ran through Avernus, with a number of offshoots and falls.[18][14] Rivulets, lakes, and streams flowed across Avernus's plains and fed the Styx.[9][15] The Styx, which at one point flowed at the edge of the layer, was later located at its center thanks to a relentless baatezu campaigning and conquering of gate-towns along the layer's edges.[15]

Government[]

Blood war-5e

A legion of barbazu (right) faces a horde of dretches (left) in Avernus, the battlefield of the Blood War.

Whether for the living or the dead, Avernus was the entry point to Baator and the most commonly visited of the Nine Hells, since Asmodeus forbade any portals opening to other regions.[3][13][17] Because of this, damned souls had to come through Avernus before reaching other layers of the Nine Hells and so the layer was frequently inhabited by the servants of other archdevils, such as the barbazus that gathered the forsaken, or imp and spinagon messengers. The primary reason for the magical restriction was that, for a demonic invasion force to access the lower layers of Hell, they would be forced to conquer and claim the layer directly above it.[13]

As the buffer between the Nine Hells and the Abyss, Avernus was incredibly dangerous even without its natural hazards, as baatezu armies trained for future battles.[3][9] While the layer was once bustling with cities and citadels, centuries of fighting the Blood War ravaged it so that only perpetually rebuilt strongholds and fearsome fortresses remained.[19] It was in a state of constant expansion by military conquest.[15]

The ruler of Avernus was titled the Lord of the First.[9] This position was held by Zariel, who had been betrayed by Bel,[9] before she then supplanted him by the late 15th century DR. Bel, a pit fiend general from Dis,[20] was demoted by Asmodeus and made her advisor. She resided in a soaring basalt citadel.[21] When he ruled, Bel dwelled in his own fortress at the center of the Bronze Citadel.[9]

Trade[]

The famous material known as Baatorian green steel could only be found on the wasteland level of Avernus. This ore was extracted from deep shafts in large-scale mining operations.[22] The ore could be used to forge green-tinted steel, tougher, sharper, and lighter than steel found on the Prime.[23]

History[]

Bloodwar

The Blood War in full swing on Avernus. Click on the image to get the full effect.

Avernus was once ruled by then-archfiend Tiamat,[24][25] who served Asmodeus faithfully.[26][20] Her job was to prevent outcast devils on the layer from becoming a threat, but she performed so poorly that Asmodeus demoted her. Knowing her failure was not deliberate by reading her thoughts, Asmodeus deigned to allow Tiamat to remain in Avernus unpunished, and even gave her a chance to regain her position if she impressed him in her new role as the guardian of the main gate to Dis.[27][24][3] This state of affairs lasted until 1346 DR when Tiamat was elevated to status of demigoddess.[28]

Avernus was then ruled by Zariel, until she was inevitably betrayed by Bel, a pit fiend general waging the Blood War and not one of the Dark Eight. He was Lord of the First by 1372 DR. Bel's minions whispered that he kept Zariel prisoner deep within the Bronze Citadel and drained her of her hellish power, slowly turning her into a soul shell while he enhanced his might. Lacking the support of the other Lords of the Nine, bar maybe Asmodeus, Bel could advance no further, at least for the time being.[9][3][25]

During Bel's rule, Asmodeus asked Tiamat to offer covert aid to Zariel in order to prevent Bel from becoming too powerful, in a ploy orchestrated with Bel to keep Tiamat herself in check,[27] effectively making her a prisoner in Avernus.[29]

Some time after the Spellplague, Asmodeus offered Tiamat the rulership of Avernus once more. However, to avoid disappointing Asmodeus again and to prevent a conflict with Bel, Tiamat refused, instead offering to be Asmodeus' champion and devouring all who opposed him.[27]

Some time later, Bel fell out of favor with Asmodeus for his inability to successfully repel a demonic invasion of Avernus. Zariel reclaimed her title as Lord of Avernus following Bel's demotion. He was forced to serve as Zariel's advisor[21][25] and remained one of her chief lieutenants, waiting for her reckless tactics to lead to a mistake, so he could claim his title back.[19]

Before Zariel's second rule, Avernus was known to be a rich and civilized realm of cities and commerce. The Blood War reduced the entire layer to a blasted and abandoned wasteland, whose only functioning structures were military citadels to muster the devilish forces.[19] Upon her return to power, Zariel, still enraged from having been at Tiamat's mercy, assisted Severin Silrajin and a group of Red Wizards of Thay to free her from Avernus, if only to rid the layer of Tiamat's presence.[14]

Notable Locations[]

Pit of ShummrathStygian dockHaruman's HillStyxDemon ZapperArches of UllochCrypt of the HellridersUldrak's GraveBone BramblesBel's ForgeKostchtchie's MawSpawning TreesArkhan's TowerTiamat's LairTower of UrmMirror of MephistarAvernus map-5e

Map of a region of Avernus. Distances are approximate. Hovering over the map will reveal main features. Clicking will link to the article for that location.

  • The Bronze Citadel: A huge fortress-city dozens of square miles in extent and ringed by twelve heavily defended walls. It housed hundreds of thousands of lesser devil troops and war machines. It was constantly being added to in the form of new fortifications against attacks.[11][9][13] The Lord of the First reigned from here.[9]
  • The Great Avernus Road: A massive road leading from Bel's fortress for the purpose of transporting large armies of devils swiftly to battle.[30]
  • The Pillar of Skulls: A hideous landmark of trophy-skulls of those killed in the Blood War. It reached a height of more than 1 mile (1.6 kilometers). It was very close to the entrance to the second layer, Dis.[9]

Divine Realms[]

Other Locations[]

Connections[]

Fort Knucklebone DiA

The settlement of Fort Knucklebone, run by the infamous Mad Maggie.

An especially high metal spire of Dis, the plane below, skewered through the haze between layers and emerged in Avernus near the Pillar of Skulls. Its spiral stairwell let devils and petitioners cross on foot between the layers, with many falls, by chance of otherwise.[9]

A portal to Avernus was erected in the spring of the Year of the Bloodbird, 1346 DR in the Burial Glen of Myth Drannor by Banites loyal to the High Imperceptor of Mulmaster, but under the influence of Zhentarim agents and, by proxy, a cabal of alhoon living in the ruins. The alhoon had it erected so that the devils it spawned would prevent the local phaerimms from attacking the liches while they searched the city for magic.[34][35] Although intended to only remain open a short time, interference from Malkizid caused it to become permanent. The portal was eventually closed by the Knights of Myth Drannor in 1357 DR, though the devils it had already unleashed over the previous 11 years continued to infest the ruins until the Elven Crusade led by Seiveril Miritar in 1374 DR.[36]

Another portal to Avernus was erected in Dragonspear Castle by a Calishite mage after Daeros Dragonspear, the castle's builder, was tricked into sacrificing himself.[37][38]

Inhabitants[]

The layer was inhabited primarily by abishai, lemures, nupperibos, and spinagons. Imps were also common, as well as dragons, goblins, and kobolds.[3]

Legions of devils dressed in mail stood an eternal watch on Avernus, in readiness for a sortie in the Blood War.[9]

Appendix[]

Background[]

Avernus was an ancient name for a volcanic crater located near Cumae, Italy which the Romans believed was the entrance to the underworld.

Appearances[]

Adventures
Well of WorldsThe Rise of TiamatBaldur's Gate: Descent into Avernus
Novels
Elminster in Hell
Video Games
Baldur's Gate series (Baldur's Gate: Siege of DragonspearBaldur's Gate III)Neverwinter (Infernal DescentAvernus)
Organized Play & Licensed Adventures
Avernus Rising (Faces of FortuneInfernal InsurgencyThe Diabolical DiveIn the Garden of EvilRuined ProspectsTipping the ScalesLosing FaiThe Breath of LifeThe Swarmed HeartThe Vast Emptiness of GraceMaddening ScreamsHonors UnforeseenIn the HandConsequences of Choice Fang and ClawWhere Devils Fear to TreadInfernal PursuitsHellfire Requiem) Dreams of the Red Wizards (The Harrowing of Hell)Infernal Machine Rebuild
Referenced only
Escape from ElturgardHungry ShadowsDay of the DevilLiar's NightForeign AffairsTears Among the Stars
Card Games
Magic: The Gathering (CLB)

External Links[]

Further Reading[]

Gallery[]

References[]

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  2. Jeff Grubb (April 1987). “Plane Speaking: Tuning in to the Outer Planes”. In Roger E. Moore ed. Dragon #120 (TSR, Inc.), pp. 42–43.
  3. 3.00 3.01 3.02 3.03 3.04 3.05 3.06 3.07 3.08 3.09 3.10 Chris Pramas (November 1999). Guide to Hell. Edited by Kim Mohan. (TSR, Inc.), pp. 28–30. ISBN 978-0786914319.
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Connections[]

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