Unfortunately, there is a Law that states: "Wherever you put a big pile of heavy stuff you don't want to move for a long time, or possibly ever again, is Always Only Just in Exactly the Wrong Place."
It has been demonstrated with a large number of heavy concrete blocks, large piles of rubble, tiles, gravel, wood and pretty much everything and anything else that needs a large space to occupy. The reason the piles are "Only Just" in the wrong place is that they invariably need to be moved a tiny bit one way or another. Sometimes both.
Today, I discovered that the Law can also apply to trenches, and have spent many hours moving a trench a few feet further East of the Shack. It's an alarming discovery.