Oesmas

But isn't that in Hoenn region? I'm talking about in the Sinnoh region :p

Hey guys sorry to bother yall, but I just found someone carrying a beldum in pokemon platinum. Is there a place where we can catch it? I tried searching this up, but the only location Beldum appears is Meteor falls (in the Hoenn region). I would appreciate it a lot if anyone knows more about this. Thanks!