Marble Mountain Air Facility

Marble Mountain Air Facility
Name	Marble Mountain Air Facility
Location	near Da Nang International Airport, Quảng Nam Province, South Vietnam
Used	1965–1975
Controlledby	United States Marine Corps, United States Navy
Battles	Tet Offensive, Battle of Hue, Easter Offensive (1972)

Marble Mountain Air Facility

Marble Mountain Air Facility was a United States United States Marine Corps and United States Navy aviation complex adjacent to Da Nang Air Base near Da Nang and Chu Lai. Established during the Vietnam War, it supported rotary-wing operations, medevac missions, assault support, and special operations for units drawn from I Corps (South Vietnam), III Marine Amphibious Force, and allied forces including the Army of the Republic of Vietnam and Australian Army. The facility became a focal point during major campaigns such as the Tet Offensive and the Easter Offensive (1972), and its legacy involves veterans, historians, and preservationists connected to Vietnam Veterans Memorial efforts.

History

Construction of the site began in 1965 as U.S. forces expanded from Danang and Pleiku Air Base to support counterinsurgency operations against the Viet Cong and the People's Army of Vietnam. Early development involved elements from Marine Aircraft Group 16, engineering units from Naval Mobile Construction Battalion 5 (Seabees), and logistical coordination with Military Assistance Command, Vietnam (MACV). The facility survived attacks during the Tet Offensive in 1968 when units from 1st Marine Division (United States) and elements of the 3rd Marine Aircraft Wing defended the complex. Throughout 1969–1972 it hosted squadrons rotating under Operation Keystone drawdowns and later supported missions during the Easter Offensive (1972) with aircraft vectored by United States Pacific Command assets. The 1973 Paris Peace Accords and subsequent U.S. withdrawal led to turnover to South Vietnamese Air Force units and final evacuation amid the Fall of Saigon-era operations.

Facilities and Infrastructure

The air facility consisted of multiple helicopter landing pads, maintenance ramps, fuel storage operated under Defense Logistics Agency contracts, ordnance magazines supervised by United States Navy explosive ordnance teams, and aviation maintenance shops run by Marine Aviation Logistics Squadron 16. Support buildings included barracks patterned after Tent City designs, a tactical operations center integrated with Da Nang Air Base air traffic control, and medical detachments coordinated with U.S. Army Medical Department evacuation procedures. Seabee-built revetments, perimeter fencing, and hardened shelters mitigated threats from indirect fire employed by People's Army of Vietnam rocket and mortar units. Fuel pipelines and fuel bladder systems followed specifications from Naval Facilities Engineering Command, while runway lighting and navigational aids were compatible with Instrument Landing System standards used at regional bases such as Phu Bai Combat Base.

Operations and Units

The facility hosted a rotating mix of helicopter squadrons including elements of Marine Medium Helicopter Squadron 162, HMM-362, and HMM-164 as well as Marine Light Attack Helicopter Squadron 369 and detachments from Helicopter Mine Countermeasures Squadron 12. Navy helicopter units and HC-7 detachments also conducted combat search and rescue (CSAR) missions. Aircraft types included CH-46 Sea Knight, UH-1 Iroquois, AH-1 Cobra, CH-53 Sea Stallion, and recovery platforms such as the HH-3 Jolly Green Giant. Units coordinated with 1st Marine Division (United States), 5th Special Forces Group (United States), and MACV-SOG for insertion, extraction, and interdiction operations. Logistics and maintenance were managed by Marine Wing Support Group 17, Aircraft Intermediate Maintenance Department, and Navy aviation support detachments, enabling high sortie rates during campaigns like Operation Hue City.

Role in the Vietnam War

The air facility functioned as a hub for assault support, medevac, troop transport, close air support coordination, and resupply missions during major engagements such as the Tet Offensive and the Battle of Hue. It provided launch and recovery for armed escort helicopters supporting U.S. Army and South Vietnamese Marine Corps ground operations, and it was integral to humanitarian evacuation efforts during crises including the Fall of Saigon period. The base supported combined operations with allied contingents from the Australian Army and the Republic of Korea Armed Forces and was a staging area for civil-military operations tied to Civil Operations and Revolutionary Development Support. Intelligence and reconnaissance missions were coordinated with units from Defense Intelligence Agency and Naval Intelligence Command elements deployed within I Corps Tactical Zone.

Post-war Use and Preservation

After turnover, the facility and adjacent land were absorbed into Vietnamese civil and military uses, with parts repurposed for commercial aviation and local industry near Da Nang International Airport. Veterans' groups such as the Vietnam Veterans of America and preservationists affiliated with the National Museum of the Marine Corps have worked to document unit histories, aircraft serial numbers, and personnel records associated with the site. Memorabilia and oral histories have been contributed to institutions including the Smithsonian Institution and regional museums like the Da Nang Museum. Annual commemorations involve former squadrons, associations linked to Marine Aircraft Group 16 Veterans Association, and family members who served in helicopter squadrons.

Environmental and Safety Issues

Post-conflict concerns included unexploded ordnance (UXO) clearance efforts coordinated with United Nations Development Programme initiatives and Vietnamese demining agencies, and remediation of aviation fuel contamination involving agencies similar to U.S. Environmental Protection Agency protocols adapted through bilateral cooperation. Veterans and local communities have raised issues related to exposure to defoliants such as Agent Orange and ordnance residues, prompting health studies by organizations like Centers for Disease Control and Prevention and investigative projects tied to Veterans Affairs (United States). Environmental assessments have addressed soil remediation, groundwater monitoring, and safe disposal of legacy munitions in coordination with international NGOs and Vietnamese authorities.

Category:Airports in Vietnam Category:United States Marine Corps air stations Category:Vietnam War air bases