four men, wearing only swimming trunks, entering a man-made pool cut into a frozen lake or river

four men, wearing only swimming trunks, entering a man-made pool cut into a frozen lake or river. The water surrounding the pool is covered in ice and snow. A white cross made of ice stands on the platform above the water. Other people are visible standing on the ice in the distance, some of whom are wearing winter clothing. One of the men entering the pool is holding a towel.