Footer Pic

Hi, going through the documentation, I feel certain that I can figure out the Footer (Highend Minimal Demo plus the social media icons). However, I can’t figure out how to change the picture that’s right above that section.

It’s the picture of the mountains and the birds. That’s what I want to change. I’ve attached a screenshot.

I’ve looked everywhere and I can’t figure where I need to go to change it. I would really appreciate your help! Thanks!!