I saw these in the spring. They were more or less in a ditch, next to a corn field. The ditch was dug up in maybe April, more or less right before they planted the field. They look like carrots, but carrots don't get that long, do they? Especially not if they get dug up every year, as these apparently do. Also I think they might have been horizontal under the soil, before getting dug up, though these pictures don't really support that and it's been a few months so I don't know what that impression is based on.
But so anyway. What are these? Opening the photos in a separate window may be helpful.