The city of Tabuk was once called the “Valley of Gamonangs,” the Kalinga tribe who had dominated Northern Kalinga centuries ago. This tribe was hostile and antagonistic which provoked anger from the Southern Kalingas and resulted to tribal wars. Soon, an epidemic followed which almost wiped out the Gamonang tribe. The survivors fled to the hills bordering the provinces of Isabela and the old Mt. Province. Since then, the valley became a “No Man’s Land” and was left to deers, wild hogs, wild horses, wild dogs and wild carabaos.

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Source:

Wikipedia.org

Tabuk.gov.ph