A barrel is used:
- During the Regicide quest as a component in making a bomb needed to destroy Tyras camp.
- During the Mourning's Ends Part I quest to make a poison.
- During the Tourist Trap quest to rescue Ana.
The barrels are mainly used in the quests to be filled up with coal tar making a Barrel of coal-tar or rescue NPCs, as such in the Tourist Trap quest.
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