This is brand new (i struggled to come up with a name and description, but I feel its good enough, its definitely a point of interest), in a nature walk in my local area. It was rejected by the ai and then couldnt be verified. I took the pictures showing the houses on the nearby road hoping that would be enoigh
Since you can provide up to five supporting photos, I would use those to prove the location, e.g., take a photo from a long way away that ties to streetview and then go closer, or take photos from lots of different angles at a good distance away.
Also one supporting photo having a gps tag on it like from GPS Map Camera app (or similar) can help confirm location.
Edit: also double-check you pin the right location just in case.