Locating irrigation valve box

[hr_veedu]

I'm trying to locate a buried valve box. Any clues or experience with this setup will be appreciated.

the electrical wires are on the left side of the picture.

The inflow after coming out of the pressure breaker goes perpendicular to the wall.

There are these two lead pipes sitting out there. Are they a clue that the valve box is down there with extras for future use?

 

[havasu]

Follow the area on the outflow of the pressure breaker.

 

[Steve123]

What is this ?

 

[hr_veedu]

Thanks, following the lead pipe advice worked. The valve housings were hidden underneath new coverings of garden layers.