Photograph of surveyors working along the base of a flume, taking levels of the "trestle bents" probably along the Twelve-Mile (Chandindu) River section of the Yukon Ditch.
Photograph of surveyors working along the base of a flume, taking levels of the "trestle bents" probably along the Twelve-Mile (Chandindu) River section of the Yukon Ditch.