That.looks more like a capped power outlet.
I was (over)thinking it might operate a switch or a reset for some sort of integrated GFCI... well, I am German!
What's behind the cap? Does it unscrew?
How old is the house? Could have been a heating oil delivery pipe if the house is old enough to have used a boiler and radiators for heat.
This is a good a time as any for me to learn something. Population growth is going to require a couple (or however many baby daddies) to birth more than that particular pair of people. Right?I just heard a story about South Korea's deaths passing births for the first time and it was framed as if this is a bad thing. Guys, maybe it's time we change how we measure an economy so it's not dependent on unsustainable population growth.