noun
a person who explores caves, especially as a hobby.
Origin:
1940–45; < Latin spēlunc ( a ) cave (≪ Greek spêlynx, stem spēlyng-, akin to spḗlaion; compare spelaean) + -er1
Good for you boxtops, I've recently been toying with the idea of trying to learn a new word from the dictionary to improve my vocabulary but when you see how many words there are it's rather daunting.