It extends over the Landes and Gers departments and represents 57% of the vineyards.
It lies in the west, beside Armagnac-Ténarèze, an undulating area; the grapes grow in acidic, argillaceous and stony ground.
Iron rust colors parts of the soil and these spots are called ’’sables fauves’’.
Major towns in the Armagnac region include Eauze, Cazaubon and Nogaro.
The most famous producers of Cazaubon : Domaine de Boingnères, Château de Briat, Domaine de Laberdolive, Domaine de Luquet, Domaine d'Espérance, Château Garreau, Château Laballe etc.