A tributary of such a steep slope of 5km in length, nearly 70m high in the Thung Nua mountain range has the highest peak of 450m above sea level.

Located on the strategic route 15A or 30 road running through My Son commune, Do Luong district, Nghe An province - Truong Bon has become legendary place in the great national defense of our nation. In the 20th century, because of Truong Bon, a particularly important strategic position, was the "monolithic route."

Truong Bon historical site was built, preserved and embellished on an area of 217.327m2, including 21 main categories.