A permanent "Nuclear Shadow" in Hiroshima created by the blast

The heavy radiation essentially bleaches surfaces, and if there's something shielding it, like a body, it creates these shadows.

Oh. Thanks :)

It also goes in line with the fact that the actual explosion is so incredibly intense that the light and heat produced can permanently change surfaces, not to mention that anything biological that was that close to ground zero was vaporized in an instant.

There's a ton of shadows around the drop site, I'm sure.

Yes there are a lot of them, not just 1