Hà Vá Nguồn

Hà Vá Nguồn lies in the upland country of Đồng Xuân, behind the coast of Phú Yên. Rivers descend through the hills towards the sea, crossing a region once known to the Cham as Aia Ru. In 1611 the Nguyễn lord Nguyễn Hoàng sent Văn Phong south and established Phú Yên as a prefecture, divided into the districts of Đồng Xuân and Tuy Hòa. The new administration marked a southward shift of the frontier between the Nguyễn domains and the remaining Cham territories.