Cagayan Valley, designated as Region II, is an administrative region in the Philippines located in the northeastern portion of Luzon. Most of the region lies in a large valley in northeastern Luzon, between the Cordilleras and the Sierra Madre mountain ranges. The eponymous Cagayan River, the country’s longest, runs through its center and flows out from its source in the Caraballo Mountains in the south to the Luzon Strait in the north, in the town of Aparri, Cagayan. The region encompasses the outlying islands of the Babuyan and Batanes to the north.
- Nueva Vizcaya