A daytime video shows a river in Sochi, Russia, with water flowing over a concrete weir or low-head dam. The water upstream is calm and a light blue-grey color, while the water cascading over the weir creates significant white foam and turbulence downstream. Green trees and other vegetation, including tall grasses, line the riverbanks. Bright sunlight casts shadows of the plants onto the foamy water in the foreground. No people or visible text are present in the video.