☆ Walkthrough in Progress: Bookmark for Updates!
★ Best Crest Builds | Best Tools
☆ Full Interactive Map of Pharloom!
★ Mask Shards | Spool Fragments | Abilities
☆ Boss Guides: The Unravelled | First Sinner
★ Wishes: Broodfeast | The Lost Fleas
The Slab is a location in Hollow Knight: Silksong. See a map of The Slab, a list of points of interest including locations for bosses, wishes, tools, skills, abilities, crests, NPCs, items, and a guide to 100% the area here!

Wardenflies can be found roaming around the area often, wielding a cage. Players have a chance of getting kidnapped by them and being brought to The Slab without your needle and coat.
When kidnapped by this enemy, you will be forced to explore the area to find your gear back from them.

If players do not chance upon a Wardenfly during their exploration, they can enter The Slab via a bridge connecting it and Choral Chambers.
Choral Chambers 100% Map Guide
Pharloom Full Map and All Locations
| The Slab Points of Interest | |
|---|---|
| Bosses | Wishes |
| Skills | NPCs |
| Items | - |
| Boss | Location |
|---|---|
Broodmother
|
![]() The Broodmother can be located in a room at the top-left portion of the Slab by following the tracks. The fight itself cannot commence without the "The Wailing Mother" wish! |
First Sinner
|
![]() The First Sinner can be found in The Slab. However, to get to the boss area, you will need three keys: Key of the Apostate, Key of the Indolent, Key of the Heretic. |
| Overworld View | Map Location | |
|---|---|---|
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|
| Found in a cage to the room left of the trapdoor that requires the Key of Heretic. | ||
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|
| Found in The Slab above the bench on the lowest level. You will need to double jump and wall jump to reach the area. | ||
| Skill | Effect | How to Get |
|---|---|---|
| Rune Rage | Silk Cost: 4 Forgotten Weaver technique. Sew rending runes upon one's enemies. |
![]() Obtained by defeating the First Sinner in The Slab. You will need the Key of the Apostate, Key of the Indolent, and Key of the Heretic to unlock the door to its room. |
List of All Skills and Effects
| NPC | Location |
|---|---|
| Grindle | ![]() Grindle is located in the room west from the central bench, the one that's across the central shaft. He can only be encountered briefly. |
| Old Penitent | Grindle is located in the room west from the central bench, the one that's across the central shaft. |
| Overworld View | Map Location | |
|---|---|---|
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|
| Requires the Key of Apostate and Faydown Cloak. From the rightmost bench, head up the central room and unlock the room on the right. Activate the mechanism at the center and use pogo on the spike wheel to reach the top left platform. | ||
| Overworld View | Map Location | |
|---|---|---|
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|
| Obtain the Faydown Cloak ability (Double Jump) to get up here and into the cave. There will be a breakable wall that opens up to a room where the Memory Locket can be found. | ||
| Overworld View | Map Location | |
|---|---|---|
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|
| Can be obtained after getting the Key of Indolent and Key of Heretic to unlock the bottom area of the Slab. Afterwards, climb on the cages hanging from the ceiling and reach a hidden area and use Cling Grip to access the Spool Fragment | ||
| Overworld View | Map Location | |
|---|---|---|
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|
| On a hanging corpse found in the room to the left of the upper bench inside The Slab. | ||
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|
| Received after beating the waves of enemies that will be holding your items. | ||
Key of Apostate Location and Where to Use
| Item | Location |
|---|---|
| The Slab Map | ![]() Found to the right of the bench. Head inside a small room all the way to the right and you will find a corpse with The Slab map. |
| Shard Bundle | ![]() Found hanging on top of a Guardfly. |
| Weaver Effigy | ![]() Found in the lowest area of The Slab. Break spike walls and continue heading to the right to get to the item. |
Frayed Rosary String
|
![]() Located in the top area of a room hidden by a wall that can be broken. |

Pharloom Full Map and All Locations
The Slab 100% Map Guide



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