text: Gold mined from the Cordillera Mountain Range were brought down to the coast through the Aringay-Tonglo-Balatok gold trail, making commercial trade centers out of Aringay and the neighboring settlement of Agoo, whose coast at the time was shaped in such a way that it was a good harbor for foreign vessels coming into Lingayen Gulf. On the island of Mindanao, gold was mined along the Agusan River in the Butuan-Surigao area and extensively worked in the Butuan polity located at the mouth of the Agusan River.