Putrified Ducts: Navigating a Challenging Opportunity

The Putrified Ducts in Hollow Knight: Silksong provide adventurous players with a challenging yet rewarding destination, nestled snugly in the top-right corner of the game map. To access this intriguing area, there are two main routes players can consider, each offering unique challenges and opportunities.

Reaching the Putrified Ducts

The Bilewater route offers an arduous path that takes adventurers through winding passages from Sinner's Road or the Bellway, if they have previously unlocked it. This journey is marked by numerous obstacles and a hidden wall, which must be navigated to unlock the rightmost bench. Brave souls on this route must face off against the region's formidable boss, Groal, to secure access to the Putrified Ducts. It is widely regarded as a long and strenuous journey, better suited to those who are well-prepared and eager for a challenge.

For those seeking a less treacherous expedition, the Memorium route is highly recommended. Essential items such as the Clawline and the Faydown Cloak, obtained during Act 2, are required to proceed. From the bench in this area, players should head to the rightmost room, utilizing a double jump to uncover a hidden passage in the ceiling. Emerging onto the rooftop, they should make their way to the dead end where another double jump will reveal a breakable wall, opening the way to the Putrified Ducts. This strategy enhances navigation and facilitates access to lucrative items, making it the preferred option for most explorers.

Exploring the Treasures Within

Upon entering the Putrified Ducts, players are greeted by a towering vertical chamber, where the Bellway is clearly signposted. Within this labyrinth of opportunities lies the coveted Wreath of Purity, an item of great value that neutralizes the pesky maggots plaguing the Bilewater region. Additionally, players can discover several other valuable items linked to both the caravan and Pale Lake.

The completion of certain tasks within this area enables the collection of fleas, which in turn allows players to move the caravan and establish Fleatopia. As Fleatopia evolves, it holds the promise of housing further upgrades for the caravan, providing a sense of progression and reward for the diligent explorer.

The Memorium route, with its ease of navigation, emerges as a favored approach for those looking to fully exploit all that the Putrified Ducts have to offer. This challenging yet loot-rich region beckons the daring, rewarding them with the bounties of a well-executed adventure.

Update: 16 Sep 2025