Poison Fog is a substance from The Legend of Zelda: Twilight Princess. It is a thick, purplish mist that appears between the southern and northern areas of Faron Woods subsequent to Link's first excursion into the Twilight. Upon coming in contact with the fog, Link will faint and be returned to a safe high ground; however, Midna remains unaffected, suggesting that the fog may have a connection to the Twilight. It can be temporarily dispelled by the lantern, but will slowly close in unless the lantern is swung to send it back.