During the filming of the ice floe scenes, a fire had to be built underneath G.W. Bitzer's camera in order to keep it warm enough to run.
According to G.W. Bitzer, D.W. Griffith was frostbitten on one side of his face during the shooting, and it bothered him the rest of his life.
While there is a lot of inter-cutting in the editing, the basic ice floe scenes were filmed in White River Junction (Hartford Village), VT, during the late winter.
No cast credits are on the print. Filmgoers were provided with a printed program in which all the key players were identified, in the order of their importance to the story, and this is the order in which they appear here.
The ice floes seen at the climax drifting above and going over the waterfall were actually wood constructions, as the scene was shot out of season. The waterfall itself was only a few feet high, going no further down than what is seen at the bottom of the film frame.