The Ecosystem and Regional Character working group of the Saxon Academy of Sciences in Leipzig has now, at the beginning of the 21st century, grouped all ranges in the Saxon-Bohemian border region into the super unit Saxon Highlands and Uplands (Sächsisches Bergland und Mittelgebirge). The Lusatian Mountains between Saxon Switzerland and the Zittau Mountains also belong to it, whereas Meynen had grouped it with the loess hill country to the north and east into the major unit of Upper Lusatia (Oberlausitz); to the west the new super unit is continued by the main unit groups of the Ore Mountains and Vogtland.