This is what you think it is.
It is the waste pipe for our second toilet. Our builders had to cut the concrete away to install the pipe and connect it to the sewer behind.
Below is something a bit less earthy. It's the framing for our future study, or as the Council call it, Bedroom 4, and the framing for the wall that will end the run of cupboards in the kitchen.
That's exciting too, but a necessary is necessary!