The Ilocos Region occupies the narrow plain between the Cordillera Central mountain range and the South China Sea, and the northern portion of the Central Luzon plain, to the north-east of the Zambales Mountains.
It also occupies the northern portion of the Central Luzon plain, to the north-east of the Zambales Mountains. The Ilocos Region occupies the narrow plain between the Cordillera Central mountain range and the South China Sea.
The Ilocos Region occupies the narrow plain between the Cordillera Central mountain range and the South China Sea. It also occupies the northern portion of the Central Luzon plain, to the north-east of the Zambales Mountains.
The Ilocos Region occupies the narrow plain between the Cordillera Central mountain range and the South China Sea. It also occupies the northern portion of the Central Luzon plain, to the north-east of the Zambales Mountains.