Bach Dang is a river in northern Vietnam, known for its historical significance and natural beauty. It flows into the Gulf of Tonkin and is surrounded by lush landscapes, making it a popular destination for both locals and tourists. The river is also an important waterway for transportation and fishing. The river is famously associated with the Battle of Bach Dang in 1288, where the Vietnamese forces, led by Trần Hưng Đạo, defeated the invading Mongol army. This victory is celebrated as a key moment in Vietnamese history, symbolizing resilience and national pride.