In the almost liturgically serene film, #Upstream, a camera attached to a drone follows the River Dee in Scotland to its remote and snowy source. Voiced over the austere landscape, like a rippling plate of water, runs the evocative music by the German composer, #Hauschka, the stone-pure language of Robert #MacFarlane, and most haunting of all, a breeze of ghost voices and Gaelic whispers. In the course of the 30 minutes or so, not a single hint of civilization is seen. As vie