Rioja (80), a province of W. Argentina, embraces some of the most
fruitful valleys of the
Andes which grow cereals, vines, cotton, &c.;
some mining in copper, silver, and gold is done. The capital, Rioja (6),
is prettily planted in a vine and orange district at the base of the
Sierra Velasco 350 m. NW. of Cordoba.