What makes a good guide?

[Jim Wyatt]

I think it's cavern divemaster you are thinking of, there is no cave suppervisor in the IANTD curriculum - as far as I know - and cavern DM only takes divers in caverns.

There is in fact a Technical Dive supervisor rating for cave diving in the IANTD cirriculum. Billybones went thru the program last year.