. "1.12e+10"^^ . "The Ardennes (/\u0251r\u02C8d\u025Bn/; Luxembourgish: Ardennen; also known as Ardennes Forest) is a region of extensive forests, rough terrain, rolling hills and ridges formed by the geological features of the Ardennes mountain range and the Moselle and Meuse River basins."@en . . . "Ardennes"@en . . . . . .