🛠️ Invention or technique

Benin earthworks (iya)

Murallas y fosos de Benín (iya)

Date
c. 800-1460 · confidence low
Place
Benin City, Edo, Nigeria
Credited to
Edo people (Kingdom of Benin)
Field
Tools

⚠️ Disputed: the sources disagree.

What it is

A network of earthen ramparts and ditches that delimited villages and fields and culminated in the enclosure of the royal city. It is one of the largest pre-industrial earthworks in the world.

Patrick Darling estimated some 16,000 km of ramparts in the region; the figure and the chronology are disputed. The city's inner moat is attributed to Oba Ewuare (c. 1460).

What it led to

  • the territorial organisation of the kingdom of Benin
  • defence of the royal capital
  • the planned urbanism of Benin City
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Made possible

Links

Sources✓ verified 2026-09-23