Somewhere beneath the rice paddies of Lampang province, the ghosts of runways still trace their lines. In 1944, the Imperial Japanese Army carved four airfields out of the forests and farmland of northern Thailand -- at Lampang, Ko Kha, Mae Mo, and Hang Chat -- creating a military aviation complex intended to control the skies over Burma and beyond. Japanese planners envisioned the complex as a linchpin: a staging ground for defending their positions in Burma, launching operations toward India, and ultimately shielding Thailand itself. By the time the airfields were finished, Japan's aircraft factories had been so devastated by Allied bombing that some of these runways never saw a single plane land on them.
Thailand's wartime position was unlike that of any other Southeast Asian nation. Not a colony but an ally of convenience, the country permitted Japanese forces to operate on its soil while maintaining its own military apparatus. The Lampang Airfield Complex embodied this uneasy partnership. Royal Thai Air Force squadrons flew alongside Imperial Japanese Army Air Force units -- Thai pilots in Curtiss Hawk 75Ns and Ki-27 fighters shared the same tarmac with Japanese sentai equipped with Ki-21 heavy bombers and Ki-15 reconnaissance aircraft. The 77th Sentai arrived with 30 Ki-27 fighters in late December 1941, just weeks after the war in the Pacific began. Thai bomber squadrons operated Ki-30 light bombers and Ki-21 heavy bombers from Lampang throughout 1942 and 1943. The complex also served as the command post for the 10th Hikodan, the area air force headquarters coordinating Japanese operations across northern Thailand and into Burma.
Each airfield in the complex met a different end. Lampang, the main field, had existed before the war and remained the operational hub where most squadrons were based. Ko Kha, also pre-war, was expanded into an all-weather airfield by May 1944 with extensive taxiways and support facilities -- ammunition storage, fuel depots, barracks -- yet no Japanese aircraft were ever confirmed stationed there. The Japanese abandoned Ko Kha in 1945. It limped along into the 1950s before being listed as closed by 1968. Then, in 1971, the U.S. Air Force built a space-tracking radar station on the old airfield site, housing the 17th Radar Squadron until 1976. Mae Mo, the easternmost satellite field, required engineers to hack through dense jungle starting in April 1944. On 19 June 1944, four B-25 bombers from the U.S. 22nd Bombardment Squadron accidentally bombed it while looking for a railway tunnel. Hang Chat, the fourth field, was abandoned so thoroughly after the war that it vanished from all post-war maps.
The story of Mae Mo Airfield captures the absurdity of war in miniature. American B-25s stumbled across it while hunting for the Kenghluang Railway Tunnel and dropped their bombs on opportunity. Subsequent reconnaissance flights tried repeatedly to photograph the field, but cloudy weather over the mountains foiled mission after mission. By April 1945, the airfield was reported disused. When peace came, local farmers cleared the surrounding forest and planted rice where runways had been. Two bomb craters remain visible in the landscape to this day, along with an unexploded bomb that the Thai government eventually retrieved. The jungle and the paddies have done what decades of military planning could not -- they have erased most physical evidence that the complex ever existed.
The Lampang complex refused to disappear entirely from strategic calculations. During the Vietnam War, the U.S. Coast Guard established a LORAN transmitter in 1966, positioned 4.5 kilometers southwest of the old Hang Chat runways, to aid American navigation across Southeast Asia. The proximity to the former Japanese airfield was, according to records, purely coincidental. A proposed Hang Chat Highway Strip was projected in 1973 but likely never built -- the highway's steep grading made the concept impractical, and the strip was formally deactivated in September 1975. Ko Kha's transformation into an American radar station tracking objects in space was perhaps the most dramatic reinvention. For five years in the 1970s, a dining hall and barracks stood where Japanese engineers had once planned to park bombers. The radar was dismantled in 1976, and the site fell quiet again. In August 1945, just before the war's end, the 40th Photographic Reconnaissance Squadron of the USAAF had arrived at Lampang with F-5 Lightnings -- a reconnaissance variant of the P-38 -- marking the last known military aviation use of the main field.
Today, Lampang province is known for its horse-drawn carriages, Burmese-style temples, and ceramic production -- a world away from the fighter squadrons and bombing runs of the 1940s. The airfield complex that once coordinated aerial operations from Chiang Mai to Kengtung has been almost entirely absorbed back into the agricultural landscape of northern Thailand. At Mae Mo, rice grows where Ki-27 fighters were meant to taxi. At Hang Chat, not a trace of runway remains above ground. Ko Kha's radar domes are gone. Only the occasional bomb crater or buried foundation hints at what lay beneath. The Lampang Airfield Complex stands as a reminder that warfare's infrastructure, no matter how ambitious, is often more fragile than the land it was built upon.
Located at 18.36N, 99.41E in Lampang province, northern Thailand. The original Lampang Airfield was near modern-day Lampang city; satellite fields at Ko Kha, Mae Mo, and Hang Chat were spread across the province. The terrain is a broad valley flanked by forested mountains. From the air, look for the agricultural lowlands northwest of Lampang city -- the old airfield sites are largely indistinguishable from surrounding farmland, though Ko Kha's footprint may be traceable. Nearest major airport is Lampang Airport (VTCL). Chiang Mai International Airport (VTCC) is approximately 100 km to the northwest. Elevation is roughly 250 meters ASL.