This article appears to be from 1952: http://www.time.com/time/magazine/article/0,9171,816782,00.html
It talks about a fatal caving accident in France. Note: According to the author, the term "spelunker" is "short for speleologist." Also, they found troglobitic cockroaches. I didn't know there was such a thing until now. But apparently they have been found in Australia and Thailand? I think it is interesting that a troglobitic cockroach lives in both France and Thailand, and wonder how related they are? Did their ancestors cross the Bering Strait to get there ? I don't think so. But whatever happened, happened a long, long time ago. Right ? Or did, a surface cockroach family migrate to the cave 1,000's of years ago, and stay there ? I found no troglobitic cockroach sites on the web for France. ( maybe their in French ? )