🇮🇳 India · Submerged site
Poompuhar – Sangam Drowned Port of Kaveripumpattinam
Iron Age Sangam to Early Chola (c. 500 BCE – 500 CE) · Tamil Sangam / Early Chola
Sangam Chola drowned wharf 1.5 km at –2 to –4 m off Kaveri mouth – U-breakwater at –4 m.
🇮🇳 India · Submerged site
Pattanam-Muziris – Roman Pepper Port, Kerala
Iron Age to Medieval (c. 1000 BCE – 1341 CE) · Chera / Indo-Roman
Roman pepper port brick wharf 100 m under 3 m silt at Pattanam – 8 m canoe at 4 km inland.
🇻🇳 Vietnam · Submerged site
Oc Eo – Funan Canal Port, Mekong Delta
Funan to Khmer (2nd c. BCE – 1200 CE) · Funan (Austroasiatic) / Indianized / Khmer
Funan moated canal port 3 km² – brick quay 100 m buried 2 m under Mekong delta paddy.