In Northwest China roads often end at the lips of river canyons. The trucks are then unloaded and dismantled, ferried across the river, and re-assembled on the other side. Kenanpo, [Shanxi].
Harrison Forman Diary, China, May-June 1944, Part 1 available at http://collections.lib.uwm.edu/u?/forman,51; Forman, H. (1946). Report from Red China. London: Robert Hale Limited