It was of the cantilever type. From either side of the stream extended ten layers of twenty rough-hewn, side-by-side logs, with each upper series projecting several feet farther toward the opposite bank than the layer below. The outer ends slanted upward slightly, and the shore ends were securely anchored with heavy rocks. Stringers, laid horizontally across the gap between the uppermost layers of logs out jutting from either side of the stream, were crossed with twelve-foot lengths of split logs to form the floor of the bridge. Four-foot up-rights carried railing across the length. No nails were used; only wooden pegs and clever notching of the logs. Twenty feet below, the river splashed and foamed over the rocks (p. 32).
Source of Descriptive Information
Forman, H. (1936). Through Forbidden Tibet. London: Jarrolds