The term is used solely in a geological context, as the region is bordering the geologically distinct Ardennes in the north.
Culturally and linguistically, it is made up of two sub-regions:
- The Romance-speaking part (i.e. using French dialects) called Gaume, with Virton as main cultural city.
- The Luxembourgish-speaking part called Land of Arlon (in Luxembourgish: Arelerland), with Arlon (Arel) as main cultural city and capital of the (Belgian) province of Luxembourg.
Both have Standard French as official administrative language.
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