I think it is because it is a very gentle and poetic form of memento mori.
The moon, which is the "star" of the picture, lits the clouds behind it. In front of it, a village sleeps peacefully. In front of it, the white crosses of the countryside cemetery shine under the moon.
This can give a shiver. The motif of death which is waiting for all of us, and the immensity, the beauty of the nature where it all belongs and it all goes back. The crosses of the cemetery silently "talking" to the moon while the men are asleep. The great eye of God looking at the world, or looking after the world. The contrast between the immensity of the world, of nature, and the smallness of the human events. Each of those crosses was a life, a person full of hope, and anxiety, and joy, and sorrow, and now it's a cross under the moon in an immense plane. And yet, it's as if those crosses are in touch, in harmony with the moon, with the great all. It's not a sad thought which is raised, it's a consolatory one.
At first this is just a nocturne shot. Then it becomes raising some sensations which are not necessarily rationalised as I am doing above.