I see that, but wouldn't soil, grass, brush be piled/placed over the top of the bolt hole? Even with the planned five years, you going to run into packed earth, roots etc.. There would still be a need for some digging/cutting at least for the final foot or two. With 150 years of plant, debris and whatever else comes to rest, I can see manor excavation work just to get a hatch open.
__________________
The reason that the American Army does so well in wartime, is that war is chaos, and the American Army practices chaos on a daily basis.
|