Hemlock
SolitaryCam is a tumblr blog I and another have been running since 2021. It is a stockpile of screenshots from CCTV cameras that show no humans (the "solitary" part). We avoid posting any screenshots from personal private locations, and extremely avoid posting any images which show humans unless they are completely unrecognizable. Some images are from before 2021 as I have been into this "hobby" for a while, so I personally have a stockpile of interesting snapshots.
A few examples of the types of snapshots we post:
Camera Hunting Basic [Guide]