Glue Stick Terrain 3×3 Low Profile Passage Cross Intersection

This tile lets you create an intersection in a dungeon passageway.

You could add an alcove to create a short dead end. Or conceal the alcove behind a door to create a closet or a hiding place.

Then again, you may put it in the middle of a long passageway to create facing alcoves that hold treasures and puzzles.

Add an entrance to pop into a vast chamber.

Alternately, a maze could await you around the next corner.

Perhaps the passage extends into the gloom where it might come to a sudden dead-end or a deadly trap.