You're like Encyclopedia Glatt, on the case! :)

I'm intrigued.

We've got plenty more weird shit at our house you can look at.

The blue thing was a fitted cover for it. It had no smell. The plumber poured some water down it ... obviously that didn't tell him anything. He did think it was a clean out for the sewer line untill he found the two clean outs... he did seem to feel it was part of the sewer line... considering it was cast iron and obviously old and rusted like the rest of our sewer line, but he said he had no clue what it was there for if there were two other clean outs...

Yes... our house is one big wierd fing baffelment... you are welcome to take the behind the scenes tour anytime.

Corpse hole. Er, wait, innocence tube.


How about you get a long stick and see how deep the tube goes.


If it is the same material as the old sewer pipes, it is probably part of that; did your sewer system have a septic tank? Could this be some kind of vent pipe? Presuming it has been disused for years, there might not be any smell any more.

I like the petrol idea but that probably says more about me than anything.

blow some pressurized air in there and see what pops!

Vent pipe is my guess too.

Do you have access to a fiber optic scope?

Gas pipes are cast iron, plumbed in Barbecue point?

Gas pipes aren't cast iron, they're black iron or galvanized.
I'd stick something (pole, string with weight) down there to see how deep it goes. Then fill it with water, you should be able to estimate how much it should take, once you know how deep it is. If it doesn't fill up then it must be connected to a drain... probably your sewer line. Have somebody flush the toilet while you listen to the hole. If it's your sewer line you should be able to hear it and may even feel a rush of displaced air.

Plan B - replace the blue plastic cup and fugetaboutit. ;)

That would be my Plan A. :p

Otherwise I vote for a place to stick a parasol. Some cover is common for these, to prevent water from going in. However if the pipe goes really deep, this explanation is out.

gaddamn it if somebody doesn't pee down it i'm going to texas and pee down it myself.

some things are important

Thank you, Tony, for maintaining standards. :thumb:

Left over from an antennae?

Maybe the foundation guys put it there so they could pee in it.