Spelunking, or caving, is the recreational sport of exploring caves. The term comes from spelunk, the Middle English word for “cave.” Many people are drawn to spelunking because virgin cave systems comprise some of the last unexplored regions on Earth. Edouard-Alfred Martel pioneered caving in the 19th century, and widespread interest in the activity led to the creation of the National Speleological Society in 1941. What distinction do purists draw between “cavers” and “spelunkers”? Discuss