The internet is pretty amazing. With millions and millions of users all around the globe, there really is no job too big or question too mysterious. Case in point, on the subreddit /r/Whatisthisthing, people post photos of things they find but can’t explain. From microscopic images to historical artifacts, no discovery seems too obscure. They’ve even used their collective power to solve hit & runs and help police catch criminals. If you’re ever up for a lesson on the obscurities in the world, you should definitely check it out. Here are a few of their more interesting solved mysteries to whet your appetite.