Lets try this again.
I have a renovation property which is missing a drain in the mechanical room. I need to remedy this and to my hopefull delight there is a pipe sticking out of the floor relatively close. I have never seen a pipe look like this and am hoping osomeone might have an idea what it is, and whether i can dig down, tie into it and trench it over to the mechanical room?
I have included a picture of the main stack, well, just cause.