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Archaeology, Epigraphy & Ancient Inscriptions20 Concepts & Facts

Poompuhar Underwater Excavations: Sangam Chola Maritime Trade & Marine Archaeology

Poompuhar, historically celebrated in Sangam literature as Kaveripattinam or Puhar, was a premier port city of the Early Chola dynasty situated at the estuary where the Cauvery River drains into the Bay of Bengal in coastal Tamil Nadu. Classical Tamil epics, including Ilango Adigal’s Silappadikaram and Sathanar’s Manimekalai, alongside Greco-Roman maritime treatises such as the Periplus of the Erythraean Sea and Ptolemy’s Geography, documented Poompuhar as an opulent cosmopolitan emporium engaged in transoceanic commerce with Southeast Asia, the Persian Gulf, and the Mediterranean world. According to literary traditions, catastrophic marine inundation or tectonic tsunamis submerged the ancient metropolis beneath the ocean, transforming the coastal littoral into a primary focus for underwater archaeology in the Indian subcontinent.

Scientific underwater investigations commenced during the late twentieth century under the leadership of the Marine Archaeology Centre of the CSIR-National Institute of Oceanography (NIO) in collaboration with the Tamil Nadu State Department of Archaeology and the Archaeological Survey of India (ASI). Utilizing geophysical seabed profiling, side-scan sonar, marine magnetometers, and sub-bottom profilers, marine scientists mapped submerged bathymetric anomalies extending several kilometers offshore at water depths ranging between five and twenty-three meters. SCUBA-diving archaeologists documented submerged semicircular and rectangular brick masonry structures, stone anchor stones, ring wells, and terracotta drainage channels matching terrestrial structures excavated at Kilaiyur and Vanagiri. Off the coast of Poompuhar, offshore explorations located a seventeenth-century shipwreck yielding lead ingots inscribed with Latin characters, alongside ancient Roman pottery shards, Rouletted Ware, and amphora fragments that confirmed sustained international seafaring connectivity.

Recent geospatial initiatives undertaken by the Department of Science and Technology through multi-beam echo-sounders and autonomous underwater vehicles have traced palaeo-channels of the Cauvery River and identified submerged harbor walls, demonstrating that coastal geomorphological shifts and Holocene sea-level variations dramatically altered the ancient Coromandel coastline. In competitive examinations spanning ancient Indian history, art and architecture, and maritime heritage, the Poompuhar excavations serve as an empirical benchmark validating Sangam literary geography against physical material culture. Aspirants are tested on the historical significance of the Early Chola maritime network, port architecture under Sangam polities, technological applications of side-scan sonar in underwater heritage surveys, and comparative links with contemporary ports like Arikamedu, Korkai, and Muziris.
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Key Concepts & Self-Assessment20 Key Facts

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#1
Poompuhar, also recorded as Kaveripattinam, served as the primary eastern seaboard capital and port of the Early Cholas during the Sangam Age.
#2
The ancient Tamil epic Silappadikaram recounts detailed descriptions of the bustling harbor quarters (Maruvurpakkam) and merchant mansions (Pattinappakkam).
#3
The classical epic Manimekalai records that divine wrath unleashed massive oceanic waves that inundated and engulfed the coastal port of Puhar.
#4
The Greco-Roman periplus text 'Periplus of the Erythraean Sea' references Poompuhar under the Greek name Camara alongside Poduke and Sopatma.
#5
Terrestrial excavations by the Archaeological Survey of India (ASI) at Kilaiyur in 1963 uncovered an ancient brick wharf with wooden mooring posts.
#6
Dr. S. R. Rao, the pioneer of Indian marine archaeology, initiated systematic underwater exploration off Poompuhar with CSIR-NIO in 1981.
#7
Offshore surveys in 1991 identified a submerged ship carrying lead ingots manufactured by the English East India Company dated to the early seventeenth century.
#8
In 2020, the Department of Science and Technology launched Project Digital Poompuhar to reconstruct the submerged port using geospatial acoustic mapping.
#9
The Marine Archaeology Centre at the National Institute of Oceanography (CSIR-NIO) in Goa conducts specialized offshore diver excavations.
#10
Marine archaeologists employ side-scan sonar and sub-bottom profilers to map subsurface sediment layers and identify buried anthropogenic structures.
#11
Marine magnetometers detect underwater ferromagnetic signatures, pinpointing buried metal ship fittings, iron fasteners, and cannons on the seabed.
#12
Multi-beam bathymetry and Autonomous Underwater Vehicles (AUVs) enable high-resolution 3D topographical reconstruction of submerged continental shelves.
#13
Submerged structural remains at Poompuhar have been surveyed at water depths spanning from 5 to 23 meters extending up to 5 kilometers offshore.
#14
Ancient brick structures excavated at Kilaiyur featured large baked bricks measuring 42 by 21 by 7 centimeters, typical of Sangam era masonry.
#15
Marine divers recovered Indo-Arab and composite granite anchor stones weighing between 50 and 150 kilograms from the Poompuhar seabed.
#16
Radiocarbon (C-14) and thermoluminescence dating of coastal finds indicate continuous port activity from roughly the third century BCE to the fourth century CE.
#17
Recovered ceramic artifacts include fine Rouletted Ware, black-and-red ware, and Mediterranean Roman amphorae fragments indicating wine and olive oil imports.
#18
Lead ingots recovered from the seventeenth-century shipwreck bore English foundry stamps and the VOC mark of the Dutch East India Company.
#19
Unlike inland agricultural capitals like Uraiyur, Poompuhar functioned specifically as an international transshipment emporium facing the Bay of Bengal.
#20
Competitive examinations frequently test Poompuhar alongside contemporary ports like Muziris (Pattanam) on the Malabar coast and Arikamedu near Puducherry.

Subject Specialist Commentary

Analytical perspective & practical exam advice from the Master10 academic board

Educator's Insight
For centuries, people viewed descriptions of Poompuhar's grand harbor in Tamil poetry as mere literary mythology. That changed when underwater archaeologists dove beneath the waters off the Tamil Nadu coast. Using marine sonar and diving equipment, researchers discovered real brick walls, stone ship anchors, and ancient pottery lying on the seabed. These underwater findings provided concrete physical evidence that Poompuhar was a genuine bustling port trading across ancient oceanic routes.
In competitive examinations like UPSC and State PSCs, Poompuhar is frequently linked to Sangam literature, Early Chola history, and marine archaeology techniques. Aspirants often confuse Early Chola ports with Medieval Imperial Chola naval bases; remember that Poompuhar flourished during the Sangam era, whereas Nagapattinam gained dominance under Rajaraja I. Keep the mnemonic PORT—Puhar, Ocean-sonar, Roman-amphorae, Tamil-epics—in mind to connect the literary and archaeological dimensions of this ancient coastal port.

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