Paul A Jellis wrote:... I was in some slate mines in Cornwall that the navy used as a Rum store during WW2 and it worked for them.Cheers, Paul
Not to insult the "Senior Service" but, I used to party with the Navy and found they'd drink anything at all. Of course, so would the Artillery I belonged to, making it a moot point.
As for using caves, I don't think the temperature variations would be sufficient for aging, as temperatures seem to stay pretty much consistent through the seasons. The casks wouldn't "breath" sufficiently, thereby reducing the Angels' Share and it's positive benefits to whisky. (And we don't want to make the Angels testy now do we?)