The Fishhook 11°45′00″N 106°15′00″E / 11.75000°N 106.25000°E was the name given to a salient of Kampong Cham Province, southeast Cambodia that protrudes into Bình Long and Tây Ninh provinces, Vietnam, approximately 80 km northwest of Saigon. The area consisted of generally flat plains adjacent to Mimot northeast through roughly rolling plains; and east to the roughly dissected hills and low mountains near O'Rang. Multi-canopied, dense undergrowth forest was the dominant natural vegetation throughout the area. Rubber plantations were found primarily in the western section
During the Vietnam War the Fishhook was a base and rest area for the North Vietnamese Army and the Vietcong and one of the terminus points of the Ho Chi Minh trail/Sihanouk Trail. The NVA established Base Areas 352 and 353 in the Fishhook and elements of the NVA 7th Division were also based there. US Intelligence agencies believed that the Central Office for South Vietnam or COSVN, the NVA’s political and military headquarters was also located within the Fishhook
On 18 March 1969, the Fishhook was the target of Operation Breakfast, a raid by 48 B-52 Stratofortress bombers, in the first phase of the secret bombing of Cambodia.