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The Benin Moat (Edo: Iyanuwo), [1] also known as the Benin Iya, or Walls of Benin, are a series of massive earthworks encircling Benin City in Nigeria's Edo State. These moats have deep historical roots, with evidence suggesting their existence before the establishment of the Oba monarchy. Construction began around 800 AD and continued until ...
The first moat, "Iya," measured approximately 50 feet wide and 30 feet deep, while the second moat, "Oko," was even larger, stretching to about 80 feet in width and 50 feet in depth. These dimensions underscore Oba Oguola's dedication to fortifying Benin City. [4] Beyond their size, the moats were designed with various defensive features.
A series of walls marked the incremental growth of the city from 850 AD until its decline in the 16th century. To enclose his palace he commanded the building of Benin's inner wall, and 11-kilometre-long (7 mi) earthen rampart girded by a moat 6 m (20 ft) deep. This was excavated in the early 1960s by Graham Connah. Connah estimated that its ...
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The city is known to be surrounded by wide inner walls made of earthwork and moats. In the 1974 edition of the Guinness Book of Records, it described the Benin City walls as the largest earthwork carried out before the Mechanical period. [1] Part of the walls were believed to be about 65 ft (20 m) tall. [2]
The success of the company in Benin and the significantly lower prices it offers than competitors has put in question the future of Colas Group, a French construction company with long standing history in the country. [1] In Ghana, the company is constructing the new motorway overpass, linking Spintex road to East Legon.
In Europe the height of wall construction was reached under the Roman Empire, whose walls often reached 10 metres (33 ft) in height, the same as many Chinese city walls, but were only 1.5 to 2.5 metres (4 ft 11 in to 8 ft 2 in) thick. Rome's Servian Walls reached 3.6 and 4 metres (12 and 13 ft) in thickness and 6 to 10 metres (20 to 33 ft) in ...
' vertical moat ') is a dry moat dug into a slope. A unejo tatebori (畝状竪堀, lit. ' furrowed shape empty moat ') is a series of parallel trenches running up the sides of the excavated mountain, and the earthen wall, which was also called doi (土居, lit. ' earth mount '), was an outer wall made of earth dug out from a moat. Even today it ...