irrigation works

Unesco's Science, Education and Cultural Organization recognized Thanh Thanh Mountain and Do Giang Yen irrigation project as a World Cultural Heritage in 2000.

The ancient dam was discovered by chance when the expedition found the clay mounds that had the function of blocking water from the cave walls, they suspected this was a dam built

Archaeologists have determined that the dam lies in the ancient Tical city territory that the Indians have dug and used for centuries as the Mayan's largest irrigation work. off

At present, there are still thousands of small dams in danger of unsafe, which need to be prioritized, but due to limited budget, the demand is not met. Facing the above