Subregions of Birkfeld
Following direct parts of Birkfeld have been played so far:
Neither Ruled nor Mapped Subregions until now: Koglhof.
Sibling Regions of Birkfeld
Played regions on same layer like Birkfeld to date:
Neither Ruled nor Mapped Sibling Regions until now: Albersdorf-Prebuch,
Anger,
Floing,
Gleisdorf,
Hofstätten an der Raab,
Ludersdorf-Wilfersdorf,
Mitterdorf an der Raab,
Passail,
Sinabelkirchen,
Thannhausen,
Weiz.
Badge(r)s! 
Birkfeld