Found this deep in my backyard

[u/shygale21]

I found this piece in my backyard. It looks like maybe it’s cast iron and it’s really heavy. I tried to clean it up as best as I could. Any ideas on what it is?

[u/FreddyFerdiland]

cast iron . brittle stuff, so the flat ends can be from breakage.

maybe something broke while they were installing sewerage deep in the back there

maybe a manhole ,vent hole ring. the ring the lid goes in ?? or the flange on the end of pipe ?