I can see a shadow on the ground on the mammoth to the right.
There are no shadows from the trees or rocks in the close background. That is easy to see. Especially with the trees.
Most likely explanation: shadows have a "view distance" as well, and that is pretty short, which we can see in this image.
Not that this bothers me that much. What would bother me more is how these shadows suddenly would pop up, which would be a huge immersion breaker. I guess we'll just have to wait and see.