The Carrières de Lumières defy description.  One could say (aptly) that it is a multi-media extravaganza—about 100 projectors casting 3,000 images on walls as high as 14 meters, spilling onto the ceiling and the floor, and choreographed perfectly with music ringing out from about 25 speakers strategically placed within the 5,000 square meters of a former limestone quarry certainly qualifies as fantastic spectacle. However, until you step through the door into the cavernous quarries where lime...