People performing synchronized movements at stadium

Photograph of an event. At the stadium, a large number of people arranged in a checkerboard pattern on the field perform synchronized movements with arms spread to the sides. Spectators are located in the stands and around the field. In the background, residential buildings, trees, and a tall metal structure with the inscription "KOSTROME 825 YEARS" are visible. A banner with text is placed around the perimeter of the field.