training

[Elpizo]

Best places for levels are Bahamut's cave, Crystal Tower (Kum Kum trick) or the ??? cave. But the ??? cave is quite tough, because you only encounter the powerful Yellow, Green or Red Dragons. Best start training there only if you're level 70 or above. I'm level 80 now and it goes very fast. Faster than the Kum Kum trick anyway, and there's always a chance for Onion gear (I have one full set already, yay!). =)

Hey, can you tell me where the ??? cave is

You have to unlock it via WiFi (DS version only) and receive 4 mails from King Alus and 4 mails from the 4 Old Men. After that, you'll find the ??? cave straight east from the floating continent. It's a huge shadow in the sea, you can't miss it. So use the Nautilus to dive and go up into the coral reefs. That's the ??? cave. Just don't go to far into it, or you'll encounter the super boss, Iron Giant (he can even slaughter lv 99 Onion Knights if you're not prepared).