How do I get back my previous Mac wallpaper back?

I have a MacBook Air M2 MacOS 14.2.1. In the last update (I think) I got a wallpaper of a very green hill, which looks a lot like Sonoma County where I live. (It's not the old green hill that used to be on something else.) I changed it by mistake (thought I was changing only the Chrome wallpaper) and now I can't find it. Is there any way to get it back? I have looked in the System wallpaper on the Mac and don't see it.