 Until the Burma Road could be retaken and the Ledo Road completed, the only supply route available was the costly and dangerous route for transport planes over the Himalayas between India's Assam Valley and Kunming, China.This route became known as the Himalayan Hump or simply The Hump.Operated initially by the United States Army Air Forces Ferrying Command (Later Air Transport Command) China Ferrying Command (later ATC India China Wing).