dark cave formation

[joylogan]

how do I get another dark cave formation?, I'm level 30, Casttle Story id: joylogan: : Confundido:

[MiniLaura]

send your knights to explore the dark caves

[maguar]

This thread (http://forums.teamlava.com/showthread.php?39337-Dark-cave-formation&p=432260&viewfull=1#post432260) has info