A primary stat of 68 is suggested. If your main stat isn't high enough, you'll see the following message:
I wouldn't go in here yet, unless you're eager to find out what kind of wine goes with a slow, painful death (Hint: it's usually a merlot, depending on the vintage).
(It is recommended that you have at least 68 <mainstat> to adventure here.)
Monsters in each corner normally drop only three different kinds of dusty bottles of wine, and each kind of wine drops only from two corners.
Furthermore, the corners' drops map one-to-one to these configurations, in some order that changes from Ascension to Ascension:
Merlot, Pinot Noir, Port
Marsala, Pinot Noir, Zinfandel
Muscat, Port, Zinfandel
Marsala, Merlot, Muscat
All 24 possible permutations of the corner configurations have been observed, and do not appear to have any significant difference in frequency.
If a monster from one of these zones is copied and fought outside the wine cellar, it may drop all 6 dusty bottles of wine (but the drop rates are still low, and they still cannot be yellow-rayed).
History
Created in June 2008 to replace The Haunted Wine Cellar (obsolete) which used zone id 120 and an additional parameter subsnarfblat 1-4 to determine the corner visited. 3 identical zones were created: