Found buried in yard, what is it?

[Glock 21]

Probably a vault full of gold bars. Take a jackhammer to it and report back with your riches

 

[ADAduckhuntr]

 

[keith089]

Jimmy Hoffa’s grave

 

[harrycalahan]

I thought for sure Op was kidding.

 

[brad sweet]

That’s where you hide space peanuts!