This chamber is fitted with two oil lamps, but they are rarely lit.
 

The door opens into a darkened room. 3 great casks lie atop trestles arranged along the east wall. Barrels and casks fill most of the chamber’s floor. A rack full of bottles and jugs stands along the east wall. Standing among the casks and barrels at the back of the room is a small windlass with a bucket and chain hanging from it. A wooden trapdoor lies under the windlass.

The chamber holds a wide array of beverages intended for the
quarry workers and guests. Most of the casks and barrels contain
beer, mead, or hard cider; all of these are drinkable, but none is
valuable. The rack of bottles contains wines and distilled spirits; 15
of them are rare or fine enough to bring a good market price.
Collectively, the 15 bottles are worth 1,500 gp. It takes at least
2 turns of searching to separate the valuable bottles from the
rest of the collection.

Lifting the trapdoor beneath the windlass reveals a shaft leading
down to area 26 on the lower level, with a ladder for climbing.
The windlass has enough rope and chain to lower the bucket into
the pool in area 26. The apparatus is strong enough to hold a
300-pound load.

>>14.