Underground,But If You Wanted To Go Underground Go To Eterna City,And In One Of The Houses,There Is A Man Who Gives You A Explorer Pack,And With That You Can Go Underground.
take 50 flags in the underground
No
go underground at heartthrone an Pokemon luage
no
In the underground.
underground
underground
you get them underground
The underground
Underground!
You can get them underground.
You get it by digging underground.