From BG FFXI Wiki
|Description:||An excessively large rock that appears to be good for nothing.|
|Flags:||Usable inside Mog Garden, Not auctionable, Can Use, NPC tradable, Not vendorable|
|Activate Time:||1 second|
|Let's Go! Vana'diel Day!||During the event, Tunnel Worms outside of Bastok were twice their size and occasionally dropped this costume item.|
When used, grants a "Large Worm" Costume and the player will not be able to move.