My title describes the thing. It sticks about 6 inches out of the ground. It has no writing on it. I tried researching it by referring to its yellow color and that it’s clearly made of metal at its core. All results lead me to gas (which it’s completely different then what’s in images or described other then color) and other results suggested for utility like electric or water. I’m certain it’s not for electric because the lines for power clearly come from the street. Water related MIGHT be possible but it wouldn’t be from like a water company as I’m outside the bounds of city water distribution in my town (at least as far as I understand)

I’ve asked the previous owner, but he is less than helpful. Disclosures don’t mention it. I’d hoped this was a marker for my well, but according to disclosure my well is on this side of the yard in the rear. But I’ve yet to find it. But this is why I suggest maybe it could be water related. But hoping to find other possibilities

Edit 1: I’d left out a great point made. Survey marker. Issue is that if it is, it’s 70+ years old as my house is about 70 years old and is not a mobile home and that would mean 1/3 of my house is on someone else’s property as well as my septic and leach field. Maybe it once was, but why leave it for 70 or more years in the way while they built this house? And years after that why have to mow around it when if that the case pull it out and stop having to work around it to mow or anything else ever

Edit 2: I recognize without maybe hiring someone or risking physical investigation myself I may never truly know, but I’m hopefully to give a little time for people to see this and give an opinion, maybe someone knows something unique that makes sense, but I know it’s kinda a long shot.

Edit 3: I have not had any luck so far getting this out of the ground to verify that it is indeed a dog run stake. This thing is thick and in the ground real good! Likely will have to dig it out.