it takes a certain type of person to even read this posting
You may or may not want to read the shaggy dog posting, The Alien "Shroud of Turin" in the UFO Museum Collections, Portland , Oregon.
Even though I am a ufologist this is not an object that I know a lot about. For all I know it may be a fake? But by the looks of it. . . . Accidents like this cannot be fakes. At least they usually are not fakes. The Elvis tortilla probably was a fake . . . etched by some one with a wood burner tool? This piece is nothing like that.
I asked Google to find a similar image. So, for fans of such things, the Google algorithms found proof that aliens were here in 6000 B.C. (when people rode dinosaurs, right?)
Look carefully: there are aliens, flying saucers and poker holes in an L shape. (Not to worry: I still disagree with Colin Berry et al and think the third drawing in the Hungarian Pray Manuscript is based on the shroud).