What is in this image? Provide a short, very brief description.

The image depicts a black-and-white illustration of two individuals engaged in a biathlon, a sport combining cross-country skiing and rifle shooting. The person in the foreground is aiming a rifle while prone on the snow, and another is skiing in the background. There are markers with numbers "3" and "4" indicating different stations or targets in the scene. The background includes mountainous terrain.