The Boulder Eater and the Pygmitoise (for Fossilized Fang) are both only in the I6/7, J6/7 node of the second map of Gustav Tunnel. None of the other nodes have either of these mobs. This should be helpful information for farming limit break items. Drew5252 05:07, December 21, 2011 (UTC)--.
Very easily duoed by THF & RDM (for silence)
Easily soloed as BLU95/NIN47 using mostly 75 cap gear. They do not link or aggro at all, and have a tendency to use mostly white magic or single target earth magic. Saw one eventually use Stonega III, but didn't do too much damage anyways. Seasoning Stone 2/~10