The Cagayan Valley Region is defined by the Cagayan River, the largest in the Philippines. The Province of Cagayan occupies the lower course of the river, and the northeast corner of the island of Luzon (with a few offshore islets). Cagayan's area is 9,003 sq.km., its population 952,000 (by the 2000 census) in twenty-nine towns, of which Tuguegarao is the capital.
Archaeology...
