Hollow Knight: Silksong’s **Wisp Thicket** is an optional, secluded zone attached to Greymoor. Though compact, it’s vital for its hidden Flea, narrative connections to the Father of the Flame boss, and a secret pathway to the Underworks. Below, we break down how to access it, its contents, and its gameplay significance.

Accessing the Wisp Thicket

From Greymoor’s **Halfway Home**, go to the adjacent tower. Exit north and use balloons to launch northwest. At the peak, break through the disguised ceiling passage to enter the Thicket. The route inside loops leftward, eventually merging with the Underworks—a handy shortcut for later exploration.

Key Features and Encounters

• Flea for “The Lost Fleas” quest: Mandatory for completing this collectible questline.

• Atmospheric foes: Faint, glowing wisps pose minimal threat but add ambiance.

The Thicket’s primary role is as a connective hub rather than a combat zone.

Notable Locations

• Underworks shortcut: Links Greymoor’s northwest to deeper underground areas.

• Father of the Flame pathway: A critical route leading to this fiery boss battle.

FAQ

Where is the Wisp Thicket located?

Northwest of Greymoor, via a concealed ceiling breakable by balloon-jumping near Halfway Home.

What’s inside the Wisp Thicket?

A Flea, minor enemies, and a shortcut to the Underworks.

Why visit the Wisp Thicket?

Essential for progressing quests, unlocking shortcuts, and accessing the Father of the Flame boss.