The water is being pumped through the
main line to a tilted basin buried in the soil near to the brim. The
reason for this is so that the force of the water coming out of the
pipe does not wash a hole in the ground and then wash away the soil.
You will not that a row of soil that has a "v" scooped in the top
has a piece of plastic for the water to flow on to keep from washing
the soil while diverting the water to an area of the garden to be
watered. This is the fifth photo.