I'm in the process of upgrading my certification (took Cave 2 and provisionaled), not because I want to go that much FURTHER into caves, but because I pass so many fascinating-appearing side passages in Mexico that I just want to get a chance to explore.

And after reading about the recent accident, I wonder, how much information do you want to have about new passage before you try it? How much do you need to know to stay out of trouble?