Japanese mini submarine 🤷🏻‍♂️

Gas pipes?

Water pipes

maybe you can save the world down there. over and over again... https://media.tenor.com/-PmC5KK2Xu0AAAAC/lost-hatch.gif

I see 3 different things—- the 3 leaf plane is poison ivy (bad news for me and others). The 5 leaf is Virginia Creeper — harmless vine that spreads like crazy and invades places you don’t want it. To the left of the pipe —- 6 leaves-??????

Perhaps an old in-ground oil tank, or cistern?? Are those close to a house or outbuilding?

Pipes. You’re Welcome!

There about 75 feet from the house but close to a cement slab.

some kind of shelter underneath maybe???tornado, atomic??? interesting..... tell us when you find out 👀 🤔

Start digging and find out.

Old shallow wellhead??