S?n Trà Mountain (Vietnamese: Núi S?n Trà ), known to American soldiers during the Vietnam War as Monkey Mountain,[1] is a mountain located on S?n Trà Peninsula, in S?n Trà district, ?à N?ng, Vietnam, overlooking the Bay of ?à N?ng and the East Sea. ?à N?ng Port's Tiên Sa Terminal is located at the base of the mountain's western face, as is nearby Tiên Sa Beach. A military base (now little used) is also located on the mountain.[1]