This article ommits the most important details: what are the (average) temperature, and relative humidity in those grottos? You need around 15-17°C (59-62.6°F)

This article ommits the most important details: what are the (average) temperature, and relative humidity in those grottos? You need around 15-17°C (59-62.6°F) and 75-90%, respectively to age cheese. Incidentally, I think it's the same for wine, at least for the temperature. I think relative humidity of ~60% is only needed in bottled wine and that only to avoid the corks drying out.