Exploring The Slab in Hollow Knight: Silksong often leads players to a sealed mechanism requiring the Key of Apostate. This guide reveals its well-hidden position beyond this region.

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Locating the Key of Apostate in Hollow Knight: Silksong

The Key resides within Putrefied Ducts, accessible by traversing north through Memorium after obtaining the Faydown Cloak double-jump ability. An alternative route via Bilewater’s upper levels exists but proves more perilous.

Memorium’s path proves significantly safer than confronting Graol the Great. From the vertical chamber, descend through floor openings until reaching subterranean levels. Progress leftward through two destructible barriers.

Upon reaching the chamber’s western extremity, ascend platforms while evading hostile creatures. A concealed breakable wall at the far left reveals the final location.

Beyond this barrier lies the remains of two combatants, with the Key resting beneath them. Collect it to unlock progress in The Slab. For additional Silksong insights, visit our comprehensive resource hub.