Within the Depths of Erinnyes of the Spring is the last quest under The Wild Fairy of Erinnyes quest chain in the Erinnyes Forest for Genshin Impact 4.2. See how to unlock the World Quest, its walkthrough, and the complete rewards here in this guide!

The Wild Fairy of Erinnyes Quest Guides
Foggy Forest Path	Wilting Weeping Willow
Furious Mouth of the Spring	Within the Depths of Erinnyes

How to Unlock Within the Depths of Erinnyes

Unlocked After Obtaining All Three Teardrop Keys

Within the Depths of Erinnyes is automatically unlocked after obtaining all three Teardrop Keys from the Foggy Forest Path, Wilting Weeping Willow, and Furious Mouth of the Spring World Quests which are all part of The Wild Fairy of Erinnyes quest line!

The Wild Fairy of Erinnyes World Quest Guide

Within the Depths of Erinnyes Walkthrough

Go Back to Marcotte Station

After obtaining all three Teardrop Keys, head back to Marcotte Station. Go back to the square and approach the fountain where a cutscene between you, Paimon, and Pahsiv will play. Finish the dialogue and she will ask you to place all three Teardrop Keys in the statues.

How to Get to Fontaine and Map Guide

Insert the Waterdrop Keys into the Statues

After the dialogue with Pashiv, interact with the statue and insert the Teardrop Key. The statue order does not matter and do this for the other two statues around the fountain as well.

Enter the Secret Passage Under the Square

Once all the keys are inserted, the fountain will reveal a secret passage in the middle of it which you can enter. Jump down the secret passage and you'll land in the water.

Go Deeper Into the Passage

Dive in the water to see more of the passage and make your way down until you reach the very bottom of the passage. Here, you'll see a portal that you can take to proceed even further.

Loot the Luxurious Chest

Also at the very bottom of the passage, a Luxurious Chest would be present. Don't forget to take it before going into the portal! If you forget, you can always go back to the area and take it.

Swim Further Into the Passage

After taking the portal, swim further and then finally swim to the surface. You will see a Teleport Waypoint and the roots of the Weeping Willow. A cutscene will play and Pahsiv will tell you about the filth plaguing the roots.

Cleanse the Filth Near the Root

After Pahsiv's explanation, you need to cleanse the filth near the roots by taking out the Root-Consuming Tumor. There are small Rift Hounds around the area as well, so defeat them first before taking on the tumor.

To get rid of the tumor, you need to remove the Contaminated Bacterial Mats scattered around by using the Ball Octopus' ability since they protect the tumor from damage. Once they're gone, you can start damaging the tumor.

Continue Cleansing the Filth

After reaching a certain HP percentage, a cutscene will play where there will be more impurities spawning. Pahsiv will boost your power and now you're able to damage multiple impurities at once! Once again, clear out the small impurities first so you can damage the tumor.

Continue cleansing until the tumor is gone and another cutscene will play.

Repel the Rifthounds

While talking with Pahsiv, an arcane formation will appear on the ground and Rifthounds will start pouring out of two portals. A Vishap will also appear and help you during battle!

Rifthounds will appear in waves, so defeat Rifthounds until they stop appearing and another cutscene will play.

Go With the Flow

The ground will start shaking which then teleports you into a water current. Just go with the flow of the current until you reach the surface. Once you reach the surface, another cutscene will play.

Talk with Pahsiv Again

On the surface, the tree is back to its normal, pristine condition. Pahsiv will appear with treasure chests in the water and you both talk once more. After a moment, she disappears and leaves you with your rewards!

This marks the end of the Within the Depths of Erinnyes World Quest and also the end of The Wild Fairy of Erinnyes quest chain!

Within the Depths of Erinnyes Information

Sub-Quest of The Wild Fairy of Erinnyes

Within the Depths of Erinnyes is a subquest of the quest, The Wild Fairy of Erinnyes, where you'll meet Pahsiv and help her find all three Teardrop Keys to cleanse the thing that plagues the forest and restore Erinnyes Forest to its former glory!

The Wild Fairy of Erinnyes World Quest Guide

Within the Depths of Erinnyes Rewards

Total Quest Rewards

The Within the Depths of Erinnyes does not give you any rewards for clearing the quest, but instead leaves you with a Common, Exquisite, and Precious Chest as individual rewards. You also get boxes that give Mora as a bonus!

Unlock Pahsiv's Shop

Pahsiv Location
Pahsiv's Shop	Pahsiv's Shop Location

After completing the quest, you can find Pahsiv inside a cave northeast of Loch Urania. Talk to her and you will unlock her shop, where she sells items like Lakelight Lily for Tidalga. Items in this shop do not refresh.

Bring Foggy Forest Branches to Pahsiv

Additionally, Pahsiv will ask you to bring Foggy Forest Branches to her. These branches are scattered all over Erinnyes Forest. If you give her all six, she will reward you with Primogems and other materials!

Foggy Forest Branch Locations

Genshin Impact Related Guides

All Quests and Quest Types

Other The Wild Fairy of Erinnyes Quest Guides

The Wild Fairy of Erinnyes Quest Guides
Foggy Forest Path	Wilting Weeping Willow	Furious Mouth of the Spring
Within the Depths of Erinnyes

The Wild Fairy of Erinnyes Quest Line Guide

All Fontaine World Quests Guide

Fontaine World Quest Guides
A Certain Notice	“Hey, This Isn’t Pumpkin Soup…”	“If She No Longer Dreams of You...”
A Brush of Seafoam and Crimson	A Certain Stamp	A Certain Trifle
A Fontanian Message	A Gradient of Dreams and Ochre	A Letter
An Expected Lie	An Expected Plan	An Eye for An Eye
Ancient Colors	Ann of the Narzissenkreuz	Ann's Story: Prologue
Another Horizon of Adventure	Aqueous Tidemarks	Blue Longing of Heart and Moon
Book of Esoteric Revelations	Both Brains and Brawn	Canticles of Harmony
Cupid's Lover	Danger Lurks Everywhere in Fontaine	Daydreams Beyond Space and Time
Echoes of the Ancient World	Fishing Game	Foggy Forest Path
Fontaine Research Institute Chronicles	For Yesterday and Tomorrow	Fortune Plango Vulnera
Free Verse	Furious Mouth of the Spring	Game of the Rich
Good Stuff, but Terrible Taste	Gradus ad Capitolium	Happy Birthday
Hereafter...	Impromptu Poem of the Crimson Dawn	In Expert Company Part 1
In Expert Company Part 2	In Search of Lost Time	In the Wake of Narcissus
Initial Facts	Kingdom Through the Looking-Glass	Latecoming Homecoming
Leroy	Leroy: Beautiful Friends	Leroy: Dying Flash
Leroy: Firing Squad	Leroy: Hangman's Noose	Leroy: High Noon
Leroy: Queen of the Night's Aria	Leroy: Under Guard	Meteoric Lance
Muse's Mother	Pursuit	Questioning Melusine and Answering Machine
Questions and Answers	Road to the Singularity	Rowboat's Wake
Savior's Wake	Search in the Algae Sea	Self-Automatic Foraging
Seymour's Story: Prologue	Stagnating in the Rubble	Steambird Interview
Still Mouthwatering!	Strange Stone Chronicle	Thalia and Melpomene
The Final Question	The Fountain Flows Again	The Last Day of Remuria
The Lone Phantom Sail	The Narzissenkreuz Adventure	The Red and the Black
The Shadow Over Petrichor	The Three Primary Colors of Solar Corona	The Wild Fairy of Erinnyes
Through the Looking Glass	Treacherous Light of the Depths	Truly Mouthwatering!
Underwater Nocturne	Unfinished Comedy	Unfinished Story
Upon a Flowery Field of Grass	Vagrants and Scamps	Villains
Waking from the Great Dream	Were It So Easy	Where His Life Lies
Wilting Weeping Willow	Wish-Fulfilling Treasure Hunt	Within the Depths of Erinnyes

List of World Quests