🇮🇳 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.
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13 places carry this tag, across every kind and continent it appears in.
🇪🇷 Eritrea · Ancient city
Pre-Aksumite to Late Aksumite to Early Islamic (500 BCE–8th c CE; peak 1st–6th c) · Pre-Aksumite D'MT → Aksumite (South Arabian/Eritrean)
40 ha Aksumite–Roman Red Sea port of Periplus linking elephant ivory to Mediterranean with temple and 4th-c basilica plus trilingual Monumentum Adulitanum.
🇹🇭 Thailand · Ancient city
Iron Age 4th c BCE–2nd c CE early historic port · Kra isthmus Iron Age port — Thai–Indian–Han–Silla crossroads
Khao Sam Kaeo Chumphon — Iron Age trans-Asian port (4th c BCE–2nd c CE) on Khao Sam Kaeo hill at Thai Kra Isthmus 5 km Gulf of Thailand 5 km from Chumphon, excavated 1991–2007 by B. Bellina–P.
🇮🇳 India · Submerged site
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.
🇲🇽 Mexico · Ancient port
Postclassic (c.1200–1519 CE) East Coast – Mayapan league; Late Classic hamlet antecedents · Maya (East Coast Coastal)
Xcaret (ancient Polé) is the walled Postclassic port-temple town on a Caribbean caleta 5 km south of Playa del Carmen, Quintana Roo, at 8 m.
🇮🇳 India · Submerged site
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.
🇲🇽 Mexico · Ancient city
Late Postclassic 1200–1550 CE (settlement from ~564 CE but walls/frescos 1200–1500) · Maya (Eastern coast, Postclassic International style, Chetumal polity, Mayapán confederacy)
Late Postclassic (1200–1550 CE) clifftop walled port with Caribbean panorama: 6 m limestone wall and pyramid Temple of the Frescoes with mural interiors, El Castillo (12 m pyramid with columns as…
🇻🇳 Vietnam · Submerged site
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.
🇲🇽 Mexico · Pyramid
Early Classic · Maya (North-coastal)
Mangrove island port (250–750 CE) for Gulf salt — 7-m pyramid on 700-m causeway north of Telchac.
🇲🇽 Mexico · Ancient city
Late Classic to Late Postclassic East Coast (600–1520 CE, peak 1200–1520) · Maya (East Coast – Cupul / Ecab)
Ancient Beel'maan port city (600–1520 CE, port apex 1200–1520) 8 km north of Cancún on Caribbean beach ridge: 14 structures around plaza dominated by El Castillo 12.5-m-high five-stage pyramid-temple…
🇸🇾 Syria · Tell
MBA through Classical · Canaanite MBA → Ugaritic Shuksi (LB) → Phoenician → Greek emporion
Syrian coastal harbour tell (Shuksi) with MBA to Greek emporion — MBA Canaanite, LB Mycenaean imports and Phoenician Euboean emporion, Danish 1958 dig.
🇩🇿 Algeria · Ancient city
Phoenicio-Punic to Medieval (5th c. BCE–16th c. CE; Roman peak 1st–4th c. CE) · Phoenician / Punic / Roman / Byzantine
Rusuccuru (modern Dellys) is a Phoenician–Roman port on Algeria's Kabyle coast, founded 5th c. BCE as Carthaginian fish-salting station.
🇪🇬 Egypt · Ancient port
Old Kingdom 4th Dynasty (2620–2500 BCE, Sneferu–Khufu) · Old Kingdom Egyptian
Southern annex of the world's oldest harbour (Khufu) with 8 rock-cut galleries storing mortised cedar boats and 150 anchors, plus Merer papyrus dump. South mole stub now -1 m.
🇲🇽 Mexico · Ancient port
Classic · Maya/Andean
Isla Cerritos — offshore port island with dike.
