The rumbling sound intensifies until it seems like there could be as many as 4 additional sources, then stops, a crunching sound echoes throughout the chamber then all is quite.
"Don't even think about going back up there, and count ourselves lucky if they don't follow. I'll tell them personally, assuming we ever see them again, that they need an exterminator."

Yulya catches her breath visibly shaken.
Oh dear who thought there would be hordes of such creatures! I am beginning to suspect Daniella was right. What are we doing here? We need an entire army to conquer this place! If it wasn't for Sir Mormesk I would have called it a day and retreated to Phandain to report...

Yulya I am keeping the ring for now so I an scout! I'll return it as soon as we're done exploring. So stay behind a bit with your tingling armor!

Yulya nods and whispers
Yes please continue to scout!
Yulya goes 5ft  south of Nixie She again relies on her perception to search the area for enemies and traps.

Torches, barrels, long since dried stiff leather and other mining gear rest on shelves just south of this elevator shaft. To the east, a dim light seems to be illuminating the passages. Cat can smell the unmistakable scent of glowstone.

Cat looks around.
Nyaa so many traps Nya and glowstone Nya I'm sure there are humans Nya! Or were Nya. I'm worried they must have expected the bulettes to come this far Nya! We must be careful not to get cornered Nya!

Cat leaves a lamp at the curve of the tunnel S of Yulya.
A Bulette would knock it over Nya we can see when they are coming Nya.
 
Cat moves 10ft N, 5ft E and only allows very dim light to enter the large tunnel so Alice can see a bit. She makes sure no light goes W so Alice remains hidden in darkness.