Part 1 - The Eastern Sea-Gates
Ancient great highways of ancient India had already been published in my blogs: Uttarapatha, the northern arc running from Kabul to the Bay of Bengal, and Dakshinapatha, the great diagonal highway cutting down into the heart of the Deccan peninsula.
A highway is only as vibrant as the link or capillary roads that feed it. To truly understand ancient Indian commerce, we have to look at the capillary roads—the regional link routes, river channels, and even military tracks that took the hinterland products toward urban and and the international bazars.
Our exploration of these channels begins where the land ends and they meet the ports: the maritime-focused Eastern Sector.
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| Tamralipti or modern Tamluk, West Bengal |
Tamralipti Port
If you wanted to travel between ancient India and the rest of the world by sea, Tamralipti (located in modern-day Tamluk, West Bengal) was the place to be. It wasn't just a harbour; it was a massive international melting pot where spices, silk, copper, and ideas constantly changed hands. It acted as the ultimate outlet for the Uttarapatha highway.
The Lounge of Ancient Monks
We often think of ancient monks as solitary wanderers, but Tamralipti docks functioned like a chaotic international transit lounge. Here ships had to wait months for the monsoon winds to become favourable for return journey across the Bay of Bengal.
Monasteries in Tamralipti acted as inns and guest houses. Monks from China, Sri Lanka, and Sumatra lived packed together for months waiting for their ride home. They learnt each other's languages, copied and translated texts while waiting for their departure.
Diaries of three legendary Chinese monks—Faxian, Xuanzang, and Yijing give us the ancient reviews of this bustling port:
Faxian (Visited c. 410 CE): This vibrant town was an adda for spiritual seekers. He loved it so much that he unpacked his bags and stayed for two whole years copying holy scriptures and sketching sacred art. He wrote:
"Here I remained for two years, writing out my Sutras, and drawing pictures of images."
Xuanzang (Visited c. 639 CE): Noted that it was the exact junction where land and water routes crashed together. He wrote that the climate was hot, the people were "quick and fiery," but because of the trade, they were fabulously wealthy.
"This country is about 1500 li in circuit... It borders on the sea. The ground is low and damp... Regular cultivation is closely attended to; flowers and fruits are abundant. The temperature is hot... The manners of the people are quick and fiery... Here they gather together many rare and valuable objects. Consequently, the people are generally rich."
Yijing (Visited c. 673 CE): Called it the ultimate departure lounge of passengers waiting for ships heading back to China.
“Tamralipti is the place where we embark when returning to China, or sail for Sri Lanka... It is a port of great commerce.”
The Ancient Maritime Trade Route
The journey across the seas followed a simple but gruelling route, linking empires in different countries:
Guangzhou Port, China: Ships load up with fine Chinese silk, porcelain, and embroidered goods.
Srivijaya Kingdom / Java, Sumatra: This was the primary pit stop. Pilgrims stayed here for months to learn Sanskrit before moving on. Traders bartered goods for local spices.
Tamralipti Port, India: The primary hub where Indian merchants traded high-quality copper (mined nearby in Chhota Nagpur), fine cotton fabrics, and precious gems. This was a junction for monks travelling to and from Sri Lanka, Java and China.
Anuradhapura, Sri Lanka: The southern anchor of the trade route, famous for its pearls and monastic centres.
Tamralipti Trade Ledger
To visualize what actually crossed these docks, here is a snapshot of the high-value cargo moving along these capillary lines to port:
| Sent Out | Brought In |
| Raw Copper & Metalware: Sourced from the nearby Ghatsila mines, this literally drove the Bronze Age economies of Southeast Asia. | Gold & Silver Bullion: Roman and European traders paid heavily in gold coins and bullion for Indian luxuries. |
| Delicate Textiles & Muslins: The Periplus explicitly praises Bengal's cloths for their "extreme beauty" and superfine weaving. | Mediterranean Wine: Transported in distinct, two-handled Roman Amphorae clay jars excavated at the site. |
| Indigo & Exotic Spices: Highly valued blue dye for royal foreign robes, along with local aromatic spices and medicinal herbs. | Luxury Glassware & Ceramics: Fine glazed pottery, Roman oil lamps, and high-quality European decorative items. |
| Agricultural Produce: Massive shipments of grains, rice, pulses, and oils to neighbouring coastal kingdoms like Sri Lanka. | Central Asian War Horses: Brought down the Uttarapatha highway via Taxila, then loaded onto ships for elite rulers in Southeast Asia. |
| Precious Cargo: Fine ivory carvings, forest timber, tortoiseshells, and high-grade river pearls. | Silk & Relics: Silk and holy items brought in from China, alongside unique goods from the Silk Road. |
The Road to Kalinga: For War and Peace:
Moving south from Pataliputra toward the Odisha coast required more than casual dirt tracks. When Emperor Ashoka(r. 268-232 BCE), launched his massive historic campaign against Kalinga around 261 BCE, his military machine needed a safe reinforced imperial corridor.
Marching from Pataliputra to the battle field at Dhauli Hills on Daya river bank in Odisha meant covering a distance of nearly 1,000 kilometres. An army of infantry, cavalry, and elephantry moving at 15–20 km a day would have taken 6 to 8 weeks to arrive.
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| Patna-Chhota Nagpur- Dhauli |
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| Patna-Tamluk-Dhauli |
The army likely utilized two primary alignments. The first was a direct terrestrial path cutting south through the iron-and-copper-rich Chhota Nagpur plateau. The second was a river-to-coast highway, where heavy baggage barrages floated down the Ganga toward the delta near Tamralipti. From there it was a long march along the coast. State-backed pioneer units (Vardhaki or Vaddhaki in Pali) cleared forests and bridged rivers, while state granaries (Kosthagara) fed the troops.
Post-war, Ashoka refitted this brutal military route with wells, shade-giving fruit trees, and rest houses, turning a road of conquest into a peaceful capillary for trade and Buddhist missionaries heading south.
The volume of trade revenue flowing through Tamralipti was so immense that historians speculate Emperor Ashoka’s famous invasion of Kalinga wasn't just about territorial gain but was a strategic move to seize absolute control of this lucrative eastern coastline and its maritime capillary roads!
The Andhra Coast & Coromandel Trail
Further down the coast, the deltaic plains where the Krishna and Godavari rivers meet the Bay of Bengal formed the primary maritime outlet for the Dakshinapatha.
The Andhra Hubs: Ports like Ghantasala (the Kantakasela of Greek geographer Ptolemy) and Kadura specialized in exporting fine muslins, iron, and carved ivory brought down from the Deccan interior via the river basins. Monastic complexes like Amaravati sat right along these trade corridors, acting as safe havens and banks for traveling merchants.
The Godavari River Channel: Goods at Paithan(or Pratishthana), the capital of Satavahanas were ferried towards the ports when the flow of river permitted. Enroute iron and timber was loaded on barrages or rafts.
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| Satavahanas coin with ship ( Source: World History Encyclopaedia) |
The Krishna River Channel: Likewise river Krishna was used to transport minerals and forest produce towards delta. Towns such as Ter (Tagara) and Nashik served as transhipment points. In turn these towns were interconnected with feeder routes leading to Dakshinapatha.
The Ship Coins: The Satavahana ruler Yajna Sri Satakarni (2nd century CE) minted unique silver and lead coins featuring two-masted ships. Found along the Andhra coast, these coins prove that the lords of the Dakshinapatha actively projected their identity onto the high seas.
The capillary chain ultimately linked the northern river valleys to the deep southern trading ports like Arikamedu (near Puducherry). We know this route was highly active due to a trail of physical archaeological evidence.
The Black Bowls
The shiny, mirror-like Northern Black Polished Ware (NBPW) pottery found at these southern ports was the luxury items of its era—everyone wanted one to show off their wealth. For decades, archaeologists couldn't figure out how ancient Indian potters achieved that look without modern machinery. It turns out they used a top-secret mixture of fine clay combined with local organic elements (like plant juices or animal fat) and baked it at high temperatures to fuse it into a glossy, metallic glaze.
The Pottery Trail: Shards of this luxury NBPW pottery—manufactured exclusively in the Gangetic plains—have been excavated at Arikamedu, proving such luxury goods travelled over 2,000 km down this coastal corridor.
The Coin Trails: Massive hoards of imperial Mauryan silver punch-marked coins found in the south prove a unified economic bridge connected the two regions. These are Banvasi in Karnataka, Vaigainallur in Tamil Nādu, Amaravati, Nagarjunakonda, Salihundam and Veerapuram in Andhra, Pavlani and Bhandara in Maharashtra, Kotalingla, Kondapur and Phanigiri in Telangana.
Prakrit Inscriptions: Local pottery at Arikamedu also features graffiti written in mix of the northern Brahmi script, concrete proof that northern merchants were physically living and operating in these southern ports.
The Currency Paradox
Roman traders on the Coromandel coast were deeply paranoid about fake coins. Because of this, they refused to trade using local copper coins. Instead, they demanded Mauryan silver punch-marked coins or paid using their own heavy Roman gold denarii. To make sure the gold was real, local merchants would physically slash a tiny cut into the face of the Roman Emperor stamped on the coin to test the metal underneath!
The Global Crossroads
If you stood on the south-eastern coast in the 2nd century BCE, you would have obsrved an interesting scenario: a merchant paying for Mediterranean wine in silver coins minted in Pataliputra, while eating out of a polished ceramic bowl made in Bihar, and reading shipping record written in the northern Brahmi script.
The Eastern Sector proves that the ancient highways of India did not end at the borders of the subcontinent; their capillary networks ensured they flowed seamlessly into the global trade currents of the ancient world.
Essential Bibliography
For those who wish to dig deeper into the historical Eastern Sector trade routes, the following primary texts are recommended:
Beal, Samuel (Trans.). (1884). Si-Yu-Ki: Buddhist Records of the Western World by Hiuen Tsiang (Xuanzang). London: Trübner & Co. (Provides the vivid 7th-century descriptions of Tamralipti’s climate and wealthy merchant class).
Legge, James (Trans.). (1886). A Record of Buddhistic Kingdoms: Being an account by the Chinese Monk Fa-Hien of his travels in India and Ceylon. Oxford: Clarendon Press. (Contains the exact account of Faxian’s two-year stay at Tamralipti and his maritime departure).
Takakusu, Junjiro (Trans.). (1896). A Record of the Buddhist Religion as Practised in India and the Malay Archipelago by I-Tsing (Yijing). Oxford: Clarendon Press. (Details the maritime logistics and emotional resolve required to sail from Tamralipti).
Neelis, Jason. (2010). Early Buddhist Transmission and Trade Networks: Mobility and Exchange within and beyond the North-western Borderlands of South Asia. Brill. (An excellent modern authority tracking how monastic corridors mapped perfectly onto commercial highways).
Schoff, Wilfred H. (Trans.). (1912). The Periplus of the Erythraean Sea: Travel and Trade in the Indian Ocean by a Merchant of the First Century. New York: Longmans, Green, and Co. (The baseline text for ancient imports, exports, and descriptions of the Coromandel coast and Bengal muslins).
Begley, Vuma, & de Puma, Richard Daniel. (1991). Rome and India: The Ancient Sea Trade. University of Wisconsin Press. (Essential reading for archaeological data on Arikamedu, Roman amphorae, and coin hoards).
Next Up in the Series:
This post is Part 1 of a 4-part exploration into the capillary roads of Ancient India. Blogs on the grand alignments of the Uttarapatha and Dakshinapatha have already been published.
In Part 2 we shall look towards western sector of the subcontinent, exploring how the Dakshinapatha cut through Western Ghats to link up with the global markets via ports like Bharuch and Sopara. Stay tuned!
