Dead Roots Key

 is an item in Outward.

Description
"A small key that can unlock certain doors."

Uses
In Dead Roots, this key opens the skull door to Dead Tree. This door is the large wooden door with a Tuanosaur head as a handle, found towards the bottom of the dungeon near where the Marsh Captain is usually found.

Acquired From
can only be obtained during the Purifier quests. You must collect 4 notes in the Dead Roots dungeon to acquire the key.

After the quest, if you unlocked the key during the quest it will now spawn on a table next to the door to Dead Tree, for those who wish to re-enter Dead Tree later.