The Hump was the name given by Allied pilots to the eastern end of the Himalayan Mountains over which they flew from India to China to resupply the Flying Tigers and the Chinese Government of Chiang Kai-shek. It extended from Assam, India, to Kunming, China and was 530 miles long, with mountain ranges reaching over 15,000 feet in elevation. The pilots started flying The Hump in April 1942 when the Japanese blocked the Burma Road, and they continued to do so until 1945 when the road was reopened.

http://www.nimitz-museum.com/cbiprimer.htm

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