Now, this is a neat article, found in this link: http://www.dallasnews.com/travel/southw ... averns.ece
It'll give you a short story on what's happening with Carlsbad caving tours for a small fee, compared to an arm and a leg at some other caves. Yeah, yeah! I know...the others are commercial caves and they've got to make a buck. Mark Joop is the guide, so read away.