The Dinh Hills (Núi Dinh) are hills that are located to the north west of Bà Rịa, in the Bà Rịa–Vũng Tàu Province, Vietnam.
During the Vietnam War, the Dinh hills were a Viet Cong base area.
The Dinh Hills are located to the west of the Phuoc Tuy province, an area known primarily for its rich farmland; in addition to the Hat Dich, May Tao, and Long Son base camps, these particular hills were initially used in Vietnam's nationalist wars against France.
References
Dinh Hills Wikipedia(Text) CC BY-SA