So two years ago I was digging a trench for a new sewer.
I had to dig again to re-route part of it, because, (who knew at the time) we'd be adding on to the house! We were hoping it would be outside of new foundation walls, but no such luck.
Spent about an hour digging the adjusted main line (below, on right of photo) as well as most of the hole for the new clean-out (filled in, where the white dot is at the top-right).
After about 2 hours this afternoon, all the trenches, except for where the new bathroom will be (bottom left), are filled and soak-in.