A possible origin for the Turin shroud image.
The image, of an apparently crucified corpse, on the Turin shroud is very possibly a scorch mark. One way a human body can produce intense but localised heat is by preternatural combustion. Many of the reported phenomena of the shroud and of preternatural combustion do correspond.
D002102:Cadaver; D002835:Christianity; D006358:Hot Temperature; D006801:Humans; D012068:Religion and Medicine