Hose bibb boxes? What are these?

Anyone know what these things are? Nothing came out of the hose bibb when I turned the handle.

I found an additional box lying in a pile of rocks nearby.

Looks like a vinyl fence post wrapped around some wood support that houses the pipe for the hose bib.

Likely shut-off wherever it connects back at the house, or well or wherever…


Never seen that type of contraption in my neck of the woods before.

Like Dominic said, it does look like a vinyl fence post and cap.