This concrete object was in my front yard when I bought my house. Anyone know what it may be? : r/whatisthisthing

This concrete object was in my front yard when I bought my house. Anyone know what it may be? : r/whatisthisthing

Oblong concrete surface 6 underground in my back yard : r/whatisthisthing

This concrete object was in my front yard when I bought my house. Anyone know what it may be? : r/whatisthisthing

My house was built in 1860. No one can tell me what this huge slab of concrete, with a threaded rod is and why it's in my basement. It's not exactly part

What is this bubbling out of the ground in my yard? Purplish metallic gooey inside. Keeps bubbling even if I dig a thin layer down with a shovel : r/ whatisthisthing

This concrete object was in my front yard when I bought my house. Anyone know what it may be? : r/whatisthisthing

What is this concrete object in my back yard? 3 feet wide one foot high. : r /whatisthisthing

There are two strange circular concrete markers in my front yard…can anyone explain what it is for? : r/whatisthisthing

Just bought a house, few hundred lbs of concrete left in the garage, what do? : r/DIY

Strange concrete circular structure, I found it in the woods, it's pretty deep! : r/whatisthisthing

What is this cylinder buried in my yard? There's a patent number on the plates located on the sides. I've dug around it and could not see the bottom after getting down about 2 feet. : r/whatisthisthing

What is this pipe in my backyard? I bought a house and this thing is there. I was going to cut it flush to the ground, but worried there may be gas involved. Home was built in 1966. : r/whatisthisthing