abstract:Cagayan Valley (Filipino: Lambak ng Cagayan, Ibanag: Tana' nak Cagayan, Ilokano: Tanap ti Cagayan, Itawis: Tanap yo Cagayan, Malaueg: Ga-dang yo Cagayan) is a region of the Philippines (also designated as Region II or Region 02). It is composed of five provinces: Batanes, Cagayan, Isabela, Nueva Vizcaya, and Quirino.