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Hollow Knight: Silksong

Underworks 100% Map Guide

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☆ Walkthrough in Progress: Bookmark for Updates!
★ Best Crest Builds | All Crest Locations
☆ Full Interactive Map of Pharloom!
★ Mask Shards | Spool Fragments | Abilities
☆ Boss Guides: Moorwing | Savage Beastfly | Widow
★ Tasks & Wishes: Berry Picking | The Lost Fleas

Hollow Knight Silksong Underworks

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!

List of Contents

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Underworks Map

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

Checkmark Overworld View Map Location
Lost Flea in Underworks
Lost Flea in Underworks
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.

Underworks Tools

Tool Slot and Effect How to Get
Hollow Knight: Silksong - Scuttlebrace Scuttlebrace Slot: Yellow
Artificial spine that clasps tight around the shell. Enhances the wearer's innate flexibility, allowing rapid retreat.
Hollow Knight Silksong - Scuttlebrace
Can be obtained by exchanging 140x Rosaries and 1x Craftmetal from the Twelfth Architect.
Hollow Knight: Silksong - Sawtooth Circlet 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.
Hollow Knight Silksong - Sawtooth Circlet
Can be obtained by exchanging 230x Rosaries and 1x Craftmetal from the Twelfth Architect.
Hollow Knight: Silksong - Silkshot (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.
Hollow Knight Silksong - Silkshot (Twelfth Architect)
Can be obtained by bringing 130x Rosaries, 1x Craftmetal, and the broken Silkshot to the Twelfth Architect.
Hollow Knight: Silksong - Delver 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.
Hollow Knight Silksong - Delver
Found in the Underworks.
Hollow Knight: Silksong - Cogwork Wheel Cogwork Wheel Slot: Red
Expanding circular blade powered by a cogwork motor. Properls forward, slicing through foes.
Hollow Knight Silksong - Cogwork Wheel
Can be obtained by exchanging 360x Rosaries and 1x Craftmetal from the Twelfth Architect.

List of All Tools and Effects

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.
Hollow Knight Silksong - Clawline (Grappling Hook)
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.
Hollow Knight Silksong - Architect Crest
Obtained by purchasing the Architect's Key from the Twelfth Architect and unlocking the gate above her room.

All Crest Locations

Underworks NPCs

NPC Location
Twelfth Architect
Underworks 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

Checkmark Overworld View Map Location
Spool Fragment in Underworks
Spool Fragment in Underworks
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.
Spool Fragment in Underworks
Spool Fragment in Underworks
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

Checkmark Overworld View Map Location
Craftmetal in Underworks
Craftmetal in Underworks
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.

List of All Items

Hollow Knight: Silksong Related Guides

Hollow Knight Silksong Maps

Pharloom Full Map and All Locations

All Locations in Silksong

Pharloom Locations
Moss Grotto The Marrow Deep Docks
Far Fields Hunter's March Greymoor
Wormways Bellhart Shellwood
Blasted Steps Grand Gate Underworks
Choral Chambers The Slab Mount Fay
Whiteward Wisp Thicket Cogwork Core
Whispering Vaults Memorium Putrified Ducts
Bilewater Weavenest Atla Sinner's Road
High Halls The Cradle Sands of Karak

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