The mechanical heart of Pharloom's industrial infrastructure, featuring massive gears and complex automated machinery within the Citadel.
The Cogwork Core is an area in The Citadel in Hollow Knight: Silksong. [Missing information]
Cogwork Core mixes sawblade platforming with clever shortcuts; clear lower routes, then climb to solve the pillar puzzle.
Unlock the area map, grab the Mask Shard and Spool Fragment, open the central gate, then learn the Architect's Melody and exit to Whispering Vaults.
From Choral Chambers, re‑enter the Dancers arena and drop through either hole.
Enter the white‑lit building, spin the ceiling wheel to spawn a Bench, then step on the plate above to unlock the Cogwork Core map.
Drop carefully—float to avoid saws; head left to the arena beyond two Cogwork Spines.
Clear waves as floors shift; exit left to a Mask Shard and press the shortcut plate back to west Choral Chambers.
Return and descend; slip past Choirbugs and a Cleanser, then take the lower‑right exit.
Spin the top‑right wheel to open the gate and spawn a Clapper miniboss; proceed through vents to claim the Spool Fragment, then use the lever shortcut out.
Back in the shaft, cross saw runs; pogo the last saw to reach a wheel above.
Spin it to open the central gate, easing travel between left and right halves.
Climb into the upper section above the Dancers; drop a Clawline hook into their arena for future access.
Solve the moving‑hook track puzzle, defeat a Defender/Cleanser, open the gate, and exit through the top‑left ceiling.
At the summit, align all four segmented pillars via nearby levers until each descends.
Stand on the plate, play the Needolin when prompted, and learn the Architect's Melody.
Return to the lower right path; unlock the door and rejoin the Choral wheel room from the left.
Push the block, clear the arena (Vaultkeeper finale), then exit right into the Whispering Vaults.