Near the Doan Mon gate, archaeologists unearthed more relics of the Ly, Tran, Le, and Nguyen periods. In particular, there is a huge brick water road never seen in any archaeological site in Vietnam.

>>>Revealing huge waterways under Thang Long Citadel

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The excavation pit is deeper than 4m, revealing many traces of ruins through many historical periods.

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Especially archaeologists have revealed a 2m wide waterway stretching from east to west.

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Many piles are firmly closed in the water. Some
Experts say that resembles excavation points in Korea.

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Revealing lots of mallet bricks.

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Dating back hundreds of years.

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Many sewers are excavated.

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Experts study right at the excavation pit.

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The revealed relics attract scientists