The Maze Encouters
If Gash was attacked by the characters and fled into the maze, he does his best to bring threats down on them, in which case roll two d20s and take the higher result. If Gash is friendly to the party and accompanying them, he tries to steer them away from danger, in which case roll two d20s and take the lower result.
1d6 (6) Minotaurs
These bloodthirsty minotaurs are hunting gnolls but attack any other creatures they happen upon.
Treasure. The first time the characters fight the minotaurs, one of them carries 32 ep and 22 cp in a pouch made from a human face with the eyes and mouth sewn shut. The second time the characters encounter minotaurs, one of them wears silver caps (worth 25 gp each) on the ends of its horns.
A frenzied group of 2d4 (2) gnolls is lost in the maze. The gnolls attack any creatures they see.