Ödenburger Gebirge#

Oedenburg Mountains (also called Brennberg hill country), province of Burgenland, forested hill country marked by gneiss and mica slate formations (alt. up to 553 m), eastward extension of Rosaliengebirge Mountains from Sieggraben to Oedenburg (Sopron); separates northern Burgenland from central Burgenland and constitutes the Austro-Hungarian national border in the central and eastern parts of the province; brown coal deposits (on Austrian territory, only the abandoned Helenenschacht mine).