Shadows of Abaddon Mod Wiki
Fiery Caves banner.png

The Fiery Caves is an underground biome entirely made up of Thermal Rack and Ember Rock generated upon the defeat of Abaddon, the Source of the Affliction and a key component to progressing in the Shadows of Abaddon mod. This biome is the underground variant of the Flame Razed Forest.

The biome features its own unique tiles, enemies, loot, music and a boss which is key to progressing in the Shadows of Abaddon mod: Araghur, the Flare Serpent.


Fiery Caves
Characters Unique Drops

Post-Moon Lord:

Furia.png Furia
Flaming Spirit.png Flaming Spirit
Araghur, the Flare Serpent.png Araghur, the Flare Serpent


Winged Furia.png Winged Furia

Post-The Lost Siblings:

Eroded Winged Furia.png Eroded Winged Furia

During Christmas:

Festive Furia.png Festive Furia


Furia Banner.png Furia
Flaming Spirit Banner.png Flaming Spirit
Winged Furia Banner.png Winged Furia
Festive Furia Banner.png Festive Furia

From Furia, Festive Furia, Winged Furia & Flaming Spirit:

Flare Essentia.png Flare Essentia

From Eroded Winged Furia:

Erosion Sample.png Erosion Sample

From Araghur, the Flare Serpent:

Vial of Fiery Blood.png Vial of Fiery Blood
Flarium Crystal.png Flarium Crystal
Serpent Mask.png Serpent Mask
Serpent Trophy.png Serpent Trophy
Flaming Heart.png Flaming Heart
Serpent Flare Chain.png Serpent Flare Chain
Scarf of the Undying Flame.png Scarf of the Undying Flame
(exclusive to the Fiery Caves)

From terrain:

Thermal Rack.png Thermal Rack
Thermal Rack Wall.png Thermal Rack Wall
Ember Rock.png Ember Rock


  • Automatic farming in this biome is not encouraged due to the risk of Flaming Spirits having the capability to move through walls.


Surface Layers Flame Razed Forest • Scorched Sands • Snow Biome • Space • Surface • The Corruption • The Crimson • The Hallow
Underground Layers Cavern • Dungeon • Empress' Den • Fiery Caves • Desert • Underworld