🔬 Discovery

Periplus of the Erythraean Sea

Periplo del mar Eritreo

Date
c. 60 (entre 40 y 70) · confidence medium
Place
Berenice Troglodytica, Red Sea, Egypt
Credited to
Anonymous Greco-Egyptian merchant
Field
Cosmos & Earth

⚠️ Disputed: the sources disagree.

What was discovered

A sailing guide by a merchant describing ports, routes, goods and rulers from the Red Sea to East Africa and India, explaining the use of the monsoons. It is the best direct source on Roman trade with the Indian Ocean.

It is usually dated between AD 40 and 70, but some authors propose the 3rd century; the author is anonymous and the place of writing (near Berenice) is a conjecture.

What it led to

  • knowledge of ports such as Muziris, Barygaza and Rhapta
  • a basis for the Indian Ocean geography of later authors such as Ptolemy
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Made possible

Links

Sources✓ verified 2026-11-06