Question about contrast:

Why is the contrast in this picture so brutal? Is it only because of the lighting?

I took the picture with my Canon A1 through a Canon FD 1:4 70-210mm lens on CinestillXX film with ISO 400. I used a pretty small aperture because I had the setting sun on 10 o’clock. (The wind turbines in the back are about 4,5km away, the Minion less than 500m)