Agno

The upper Agno River winds through the mountains of northern Luzon before descending toward the plains of Pangasinan. Pine woods and mountain forests cover slopes above its tributaries, while the valleys form routes through the southern Cordillera. Highland communities cultivated their fields and exchanged the products of the mountains with the lowlands. Gold was among the goods carried along the networks linking the interior to settlements nearer the coast.

The later city of Baguio lies here.