We use a trench silo to store silage. (Click on this link for the 2017 blog post about filling the silo with silage.) Randy remembers that the trench silo was dug at Peace Creek about 1965 or so. It replaced a trench silo at a different location, where sandier ground had made the dirt sides collapse beyond repair.
Randy would have been about 10 years old at the time, and he remembers them digging into a hill at Peace Creek to make the new silo. After a few years, they poured cement in the bottom of the trench to make it easier to navigate.
There are still remnants of the cement, but, over time, much of the cement broke up. We now periodically put white rock in the bottom of the trench. As the photo shows below, even on a dry year, the weight of tractor tires makes the surface soft. The new white rocks will give a firmer surface.