Underdark

The Underdark is a Region of Faerûn, and consists of multiple locations in Act One of Baldur's Gate 3. It is a vast series of caverns and tunnels devoid of sunlight but full of dangerous creatures and even more dangerous mushrooms, but also contains a multitude of alchemical ingredients that are hard to find elsewhere. The Underdark in Baldur's Gate 3 is only a small portion of the true Underdark. The Drow, Duergar and Deep Gnomes are native to the Underdark.

The caverns of the Underdark.

Access

Due to its immense size, there are multiple access points into the Underdark from over-land. All of them involve travelling (or falling) deep into the depths of the world.

The following locations contain known access points into the Underdark:

Ladder from the Defiled Temple, arriving in the Selunite Outpost.
Elevator from the Zhentarim Hideout, arriving in the Storehouse.
Mushroom circle in the Overgrown Tunnel to a corresponding circle in Torchstalk Gulch
Falling into the hole in the Whispering Depths, arriving in the Minotaur Hills. (Feather Fall or the ability to fly must be used or a cutscene will show the party falling to death).

Areas

Map of the Underdark, with the Storehouse and Minotaur Hills highlighted.

Storehouse

The Storehouse is in the most north-eastern quadrant of the Underdark map. This area is recognisable for its aging pale wooden interior and is free of any enemies.

Enter the Underdark through this area when departing from the over-world's Zhentarim Basement.

Minotaur Hills

Considered part of the Storehouse, this unnamed area of the Underdark is recognisable thanks to its bright green grass and whimsical red mushrooms with swirling paths featuring wandering Minotaurs. This area is directly to the south of the Storehouse via the rope netting.

Map of the Underdark, with Ebonlake Grotto, Myconid Minefield, and Giant Bird Nest highlighted.

Ebonlake Grotto

The Ebonlake Grotto is recognisable for its densely packed oversized mushrooms, and roaming Myconids amidst which reside several NPCs and merchants.

Myconid Minefield

Considered part of the Ebonlake Grotto and in its south-east part, this nameless area of the Underdark is recognisable for being full of dangerous mushrooms such as Timmask and Bibberbang, which are a particularly dangerous combination with Torchstalk mushrooms that can quickly turn the area into a series of explosions.

View from within the Giant Bird Nest

Giant Bird Nest

Considered part of the Ebonlake Grotto and to its south-west, this unnamed area is an unremarkable corridor connecting Ebonlake Grotto, the Dread Hollow and the Decrepit Village. It is most recognisable for the giant bird's nest.

Map of the Underdark, with the Dread Hollow and Bibberbang Grotto highlighted.

Dread Hollow

The Dread Hollow is in the north-west of the Underdark. This area is recognisable for the large and brightly shining Sussur Tree, as well as the roaming Hook Horrors and a hostile wizard, Filro the Forgotton, living along its branched roots. A Bulette can also be spotted in the area.

To the south lies the tombstone of Myrna, a pet dog of Lenore.

Bibberbang Grotto

North-east of the Sussur Tree in the Dread Hollow section of the Underdark, the Bibberbang Grotto is an unnamed area of explosive and densely growing Bibberbang mushrooms, trapping Baelen Bonecloak.

The SW Quadrant of the Underdark, as seen on the map.

Arcane Tower

The Arcane Tower is in the south-west corner of the Underdark map. This area is recognizable by its neatly built stone entryway that opens to a front garden featuring Arcane Cannons.

Torchstalk Gulch

Considered to be part of the Arcane Tower and to its east, this unnamed area of the Underdark is recognisable by its dark brown paths paved with deep red mushroom clusters and spots of Torchstalk that cast floating embers into the air. The corpse of an unfortunate Drow can be found, having been killed by an unexpected fall. It can be spoken to with Speak with Dead, which is detailed further down.

Also, a few mushroom circles can be found here, one of which leads to the Overgrown Tunnel.

Festering Cove

The Festering Cove is a partially hidden, containing some Kuo-toa worshipping their god BOOOAL. It can be reached by climbing down the cragged rock in Torchstalk Gulch X: 80 Y: -241.

Map of the Underdark, with the Selûnite Outpost and Battlefields highlighted.

Selûnite Outpost

The Selûnite Outpost is in the south-east corner of the Underdark map. This area is recognisable by its crumbling stone walls, grated windows, and tattered blue banners to the goddess Selûne. A statue of the goddess holds up a bright moonstone, which channels energy into the front gate's defences.

The Outpost can be reached from the Shattered Sanctum.

Ancient Battlefield

Directly north of the Selûnite Outpost, this unnamed area of the Underdark is recognisable by its field of scattered wooden barricades and long-dead skeletons of ancient fighters.

Petrified Battlefield

To the west of the Selûnite Outpost, this nameless area of the Underdark is recognisable by its purple Glowing Gems and several petrified Drow as well as one Spectator.

Map of the Underdark, with the central area highlighted.

Decrepit Village

The Decrepit Village is the central area of the Underdark and fairly vertical. It is recognisable for its ramshackle wooden structures and rope netting enclosures. The lowest level of the Decrepit Village features a sandy beach strewn with the bodies of dead Deep Gnomes and Duergar. A boat rests at one dock, ready to take the party to Grymforge based on the story path of their choosing.

Grymforge

Grymforge is an expansive and abandoned settlement on a separate map, containing the Adamantine Forge. It is accessible via the boat at the Decrepit Village.

Regional Waypoints

The following Waypoints are available within the Underdark.

Beach Decrepit VillageX: 22 Y: -209
Selûnite Outpost X: 180 Y: -235
Myconid Colony Ebonlake GrottoX: 101 Y: -101
Sussur Tree Dread HollowX: 49 Y: -140
Grymforge X: ? Y: ?
- Ancient Forge X: ? Y: ?

Characters

Notable NPCs

Arcane Tower:

Bernard

Decrepit Village:

Dread Hollow:

Ebonlake Grotto:

Festering Cove:

Petrified Battlefield:

Dhourn

Creatures

Notable loot

Quest Items

Other notable

Phalar Aluve

The following loot may all be obtained in the unnamed areas of the Underdark region (additional loot is available in named locations within the Underdark) whether looted, purchased, or obtained as a quest reward: ^{[Needs Verification]}

Bloodguzzler Garb
Dog Collar - by digging up the grave in Dread Hollow South
Drow Studded Leather Armour
Explorer's Ring
Icy Crystal
Helmet of Autonomy
Phalar Aluve X: 117 Y: -192: by passing a Strength or Religion check to free this sword from a stone
The Spectator Eyes

Hidden treasure

Buried Chest X: ? Y: ?: Pass the check to dig up this chest near the Petrified Battlefield
Giant Nest X: 49 Y: -153: Climb the mushrooms to reach the chest contained in this Giant Bird Nest
Buried Wooden Chest X: ? Y: ?: Pass the check to dig up this chest near the center of the Bibberbang Grotto in Dread Hollow
Buried Wooden Chest X: -408 Y: 310 Pass the check to dig up this chest at The Festering Cove
Buried Wooden Chest X: -413 Y: 241 Pass the check to dig up this chest at The Festering Cove

Related quests

The following quests may all be found in unnamed areas of the Underdark region (additional quests are available in named locations within the Underdark):

Speak with Dead

Throughout the Underdark are a few unnamed, dead NPCs can that provide insights about the area.

Dead Drow

Located in Torchstalk Gulch, just at the foot of the mushroom platform wall leading to the Overgrown Tunnel.

Party member: Who are you?

Dead Drow: House Vandree... far scout... searching...
- Party member: What where you searching for?
  - Dead Drow: Quick path... to surface...

Party member: What happened to you?

Dead Drow: Threw backpack... too light... fell...
- Party member: How did throwing a backpack make you fall?
  - Dead Drow: Mushrooms... disappear... guessed wrong...

Party member: Did you have any allies nearby?

Dead Drow: Worked alone... better that way...

External Links

Underdark on the Forgotten Realms Wiki
Underdark on Wikipedia

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