Secret tunnel
Historist Duong Trung Quoc: It is necessary to conduct early research on secret basements
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In an interview with Lao Dong reporter, historical expert Duong Trung Quoc said that it is necessary to conduct early research on the secret tunnel in Hoan Kiem Lake area.
Close-up of the secret tunnel over 100 years old in Hoan Kiem Lake
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Lao Dong reporter recorded the image of a secret tunnel located inside the building of the Northern Power Corporation, 20 Tran Nguyen Han, next to Hoan Kiem Lake.