User blog comment:Edwin Shade/Google Images Is Strange/@comment-25337554-20171124100916

I guess the reason why some numbers show the similar images is shutterstock.com. As you see in the images, there is an ID for every image in Shutterstock. Also, there is an image search system in Shutterstock, so not only the image with that ID but also similar images are suggested.

(But I could not find anything else)

Well, I actually would like to have one like SCP-216 (and would "explore" it all the rest of my life).