Even though the world has suffered from a massive nuclear attack, nature comes back. This scene looks like it might have been taken late in autumn or early in the spring before the leaves have popped back out. If you hadn’t known of the devastation, you probably wouldn’t think anything about this place except for how peaceful it is.
Imagine the sound of the stream, the wind blowing through the trees, the sounds of small animals running around or birds chirp and singing as if nothing is out of the ordinary and this place would calm your nerves and make you want to stop and stare at the glory of nature.