Lyle had just realized that the ground of the White Bone Forest would produce white fog, especially in a crowded space where the fog became even more apparent. It slowly rose, turning into a dense fog, but within the blur, there were numerous flickering lights; those were the walls of the Skeleton Labyrinth. On those walls, the Soul Fires flickered within each skull.
The skeletons embedded within the walls were in various positions, some crouching, some standing. Their finger bones stretched out from the walls, reaching towards the center where the students stood, as though they wanted to drag them into the wall. The sinister flames flickered inconsistently, but the empty eye sockets were all firmly fixed on the students.
The unsettling scene before him made Lyle take a small step back. Humans have a herd instinct, and when frightened, they try to blend into the group for support.
Although the group Lyle was in at that time was anything but reliable.