#Dungeon23 Tomb of the Vampire Queen, Level 9, Room 13

 Another secret door can be found underneath the fountain-like structure in the middle. There is a 10ft drop down into the center of the room.

This room is filled with the same sorts of snakes that came out of the fountain during the encounter in Room 11. 

There are 2d10 snakes in this room.  Additionally, there is 3d10 Type U treasure here.