Zambales is a province in the Central Luzon Region in the island of Luzon and its capital is the Municipality of Iba. With a land area of 3,830.83 square kilometers, Zambales is the second largest among the seven provinces of Central Luzon. The province is noted for its mangoes, which are abundant from January to April and Mount Pinatubo.

-https://www.discoverthephilippines.com/provinces-in-the-philippines/