** Transmission Received **
'Mr. Natas'

Once again, congratulations!
You've made it farther than
even I anticipated...

Anyways, I've sent you another
bonus. Watch out for natural
gas pockets - they're
undectable and highly
explosive! One more thing -
Your altimeter is only rated
for a depth of around 6000 ft.
After that you'll need to turn
back. Really - it's just too
dangerous

*** Transmission Terminated ***