There, long ago, between the ages of Elvis and Pink, in the land of Bama.....were built mysteriously a small megalith. Few knew the reason or rhyme to this construction, only that it drew great crowds in the Bama land to come and reason why it was built.
Some felt it was a sign from the heavens.....that some UFO had dropped off. Some felt it was a bunch of drugged out freaky guys from the local Masons. Some felt it was four Auburn football players on a drinking binge. But truth be known.....it was simply left over bricks from a trailer placement.
Never mind the legends or temptation to make things mystic....just go with the flow.
What is important here....is that Larry used this formation to remind him exactly where the septic tank was placed.