🇵🇭 Philippines · Submerged site
Butuan – Balangay Harbour Settlement, Agusan del Norte
Late 1st millennium CE (c. 900–1300 CE) · Butuanon / Srivijaya-linked / Song Chinese trade
Balangay boatyard with 9 plank boats 8–15 m at 2 m silt – Agusan wharf 60 m inland.