Field drains

With all the recent rain, it's been getting a bit soggy below the orchard.  There is a natural hollow and the rain sort of gathers in the hollow and then runs in a straight line down hill, under the log pile, and is then channeled into a bund created 4 years ago during some storms.  A filed drain in the bund runs this off to a ditch.

Well, we decided that another field drain is required from the start of the hollow to the ditch.  About 13m.  As it's supposed to be a field drain, it's not very far below the surface - say 100mm.  80mm pipe.

In the picture it runs from the grey square in the foreground to the ditch.  The square is a drain cover to keep a hole/sump open that leads to the drain.