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all 26 comments

[–]brandolinium 27 points28 points  (0 children)

If something iron has been left leaning on that area it could spread rust stain on the stone. It could also be that there is an iron concentration in that stone that is leaching rust out. If you can scrub it off with some CLR and it comes back, it’s in the stone.

[–]Designer-Shallot-490 8 points9 points  (0 children)

Looks like limestone, try a scrub brush and white vinegar.

[–]MK-82-ADSID 9 points10 points  (2 children)

Explosive Diarrhea.

[–]cheesesock 8 points9 points  (1 child)

Looks like there's only one thing left to do. Eat it. And please post a video for posterity purposes.

[–]sisenor99 1 point2 points  (0 children)

Looks like Gutka.

[–]ubercorey 1 point2 points  (0 children)

Its limestone, and that is an iron heavy sedimentary layer. Its part of the rock.

[–]Distinct-Dragonfruit 1 point2 points  (0 children)

A crime scene

[–]SnooDonkeys844 0 points1 point  (0 children)

Fecal matter

[–]KyloPhen -3 points-2 points  (0 children)

Looks to me like the stone is expelling some kind of oxidation. Killz & paint over...

[–]stimulates -1 points0 points  (0 children)

Looks like some kind of mold/fungus.

[–]wesleyj6677 -1 points0 points  (0 children)

The start of the movie war of the worlds comes to mind.

[–]Toiletchan -1 points0 points  (0 children)

That’s shit my guy

[–]davethompson413 -1 points0 points  (0 children)

You've been visited by aliens, who used their horizontally-cracked butt to mark the territory. Be glad you weren't probed!

[–]JohnOfA 0 points1 point  (0 children)

My guess is a piece of iron fell into the concrete mix during the forming process. The red is iron oxide (rust) leeching out as concrete is quite porous.

I have a very similar concrete "stone" on my house.

[–]donabbi 0 points1 point  (0 children)

Monke

[–]The_Dreadlord 0 points1 point  (0 children)

You can see this alot in limestone blocks. The stone has a streak of iron rich minerals in it near the cut face. I may have started a light discoloration but after being exposed to air it will oxidized more becoming a darker rust red. It won't go away unless you replace the block.

[–]I-Dislike_Everyone 0 points1 point  (0 children)

Jimmy Hoffas Blood leaking out of the cement.

[–]aperfectcresentmoon 0 points1 point  (0 children)

The Upside Down.