In the video, a person is seen washing a rock with a hose. The rock is covered in green moss and the water is running over it, causing the moss to be washed away. The person's hand is visible as they hold the hose and move it back and forth over the rock to ensure all the moss is removed. The rock appears to be quite large and is the main focus of the video. The water is clear and the sound of the water running can be heard in the background. The person's movements are deliberate and careful, ensuring that the moss is thoroughly cleaned off the rock.