Yuan-Ti Nest

These dank catacombs have been converted into sleeping quarters. The walls are lined with alcoves that now serve as nests for yuan-ti.

When the characters arrive, twelve of the eighteen alcoves are occupied by six yuan-ti malisons (two each of types 1, 2, and 3) and six yuan-ti purebloods. The remaining six alcoves are currently not in use. Passing through the area without being spotted is impossible unless the characters use magic to hide themselves.
If the gong in area 9 is struck, all the yuan-ti in this room gather their weapons and investigate.