Underworks 100% Map Guide
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★ Mask Shards | Spool Fragments | Abilities
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Underworks is a location in Hollow Knight: Silksong. See a map of Underworks, 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!
How to Reach Underworks
Drop Down via Choral Chambers
After entering Underworks for the first time via the Grand Gate, players will have to go through Choral Chambers first to reenter it later into the story as the elevator used in Grand Gate breaks shortly after use.
Underworks Interactive Map
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Full Map of Underworks
Pharloom Full Map and All Locations
Underworks 100% Guide
| Underworks Points of Interest | |
|---|---|
| Wishes | Tools |
| Abilities | Crests |
| NPCs | Items |
Underworks Wishes
Underworks Lost Fleas
| Overworld View | Map Location |
|---|---|---|
 |
 |
|
| Located in the left room of the large pit going down where mechanical bugs and lava can be found. Head to the left, avoiding the bugs to find the Lost Flea. | ||
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|
| While technically in the Underworks, this area can only be accessed by heading north from Greymoor. From the second tower to the left, you'll need to head to its topmost area then climb your way through an opening and through Wisp Thicket. | ||
Underworks Tools
| Tool | Slot and Effect | How to Get |
|---|---|---|
 Scuttlebrace
|
Slot: Yellow Artificial spine that clasps tight around the shell. Enhances the wearer's innate flexibility, allowing rapid retreat. |
 Exchange 140 Rosaries and 1 Craftmetal from the Twelfth Architect. |
 Sawtooth Circlet
|
Slot: Blue Flexible belt of serrated metal teeth, able to affixed to the hem of a cloak. Flaring the cloak will spin the blades, damaging surrounding enemies. |
Exchange 230 Rosaries and 1 Craftmetal from the Twelfth Architect. |
 Silkshot (Twelfth Architect)
|
Slot: Red Ancient weapon of the Weavers, repaired and modified by Twelfth Architech. Uses shell canisters and the wielder's own Silk to fire. |
Exchange 130 Rosaries, 1 Craftmetal, and the Ruined Tool to the Twelfth Architect. |
 Delver's Drill
|
Slot: Red Rotary tool used for boring into bone and rock. Drives the wielder downwards, while spinning the drill with destructive force. |
 Found in the Underworks. |
 Cogwork Wheel
|
Slot: Red Expanding circular blade powered by a cogwork motor. Properls forward, slicing through foes. |
Exchange 360 Rosaries and 1 Craftmetal from the Twelfth Architect. |
Underworks Abilities
| Ability | Effect | How to Get |
|---|---|---|
| Clawline (Grappling Hook) | This ability lets Hornet throw her Needle forward and have her come to it afterward. It is essentially a Grappling Hook that allows you to travel unreachable areas. |
 Interact with the altar found in The Cauldron at Underworks. |
All Ability Locations and Upgrades
Underworks Crests
| Crest | Description | How to Get |
|---|---|---|
| Architect Crest | Spin the needle as a screw, shredding foes. Spend Silk to rapidly craft new tools. |  Obtained by purchasing the Architect's Key from the Twelfth Architect and unlocking the gate above her room. |
Underworks NPCs
| NPC | Location |
|---|---|
| Twelfth Architect |  The Twelfth Architect can be found in the room above the bench near the connecting area to Whiteworks. Use the Clawline to reach the area and hit the lever to enter the room. |
Underworks Items
Underworks Spool Fragments
|
| Overworld View | Map Location |
|---|---|---|
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|
| From the Underworks Ventrica, hit the lever and drop down into the next room and head past the vents. Head towards the enemy-infested room and defeat them before walking into the next room to retrieve the Spool Fragment. | ||
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|
| Found at the very bottom of the Underworks. Enter through the Grand Bellway, take the elevator from the Stage, and head further down once you’re in the Underworks. | ||
Underworks Craftmetal
|
| Overworld View | Map Location |
|---|---|---|
 |
 |
|
| Located in the room below where you get the Clawline (Grappling Hook). Avoid lava and bugs to get to the area. | ||
Twelfth Architect's Shop Items
| Item | Location |
|---|---|
| Architect's Key | Shop Price: Rosaries Description: Rotary key of the Architects. Opens their Chapel in the Underworks. |
| Shard Bundle | Shop Price: 50 Rosaries Description: Small bundle of shell shards tied together with string. Can be broken to use the shards for crafting. Contains 80 shell shards. |
| Crafting Kit | Shop Price: Rosaries Description: Crafting by claw alone produces inferior results, With this kit you can craft finer, sharper, and deadlier tools... if that is your wish. |
Item Pickups
| Item | Location |
|---|---|
| Underworks Map |  Can be picked up in a room above where you enter from the Grand Gate. This room is marked with a sign outside. |
Hollow Knight: Silksong Related Guides
Pharloom Full Map and All Locations
All Locations in Silksong
Author
Underworks 100% Map Guide
Rankings
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Not technically complete. I think there's a hidden room just past Delver's Drill with a giant bell embedded in the wall, presumably the other side of the one in the Father of the Flame fight and a part of Bellhart.