This complex of chambers is located directly off the New Drift, relatively close to where the New Drift exited the side of the mountain. As a result these chambers are well ventilated, lit by natural lighting and offer easy access to the outside of the mine. They were used as living quarters for House Vetrini personnel, guards and high ranking workers.
The location astride the main egress from the mountain also made this area a checkpoint and chokepoint for anyone trying to enter and leave the mine.
This entire area collapsed during the disaster, killing dozens and blocking access to the New Drift