[Aquinasfan]

So then, how was it created?

[BMCDA]

I think it was a painting from the 14th century. Here is a website that deals with the examination of the shroud.

I have an other question concerning the supernatural. You claim that certain things have supernatural causes and I just want to know how you determine when this is the case or not. How do you know that there does not exist a natural explanation and you just didn't investigate this issue carefully enough?