At its most extensive point, the void stretched for roughly twelve feet along the pipe alignment and reached nearly three feet below the remaining crust of surface soil. It was not a clean tunnel, and the surrounding earth had not vanished all at once. Soil had moved into the broken line, been carried toward the creek, and left irregular unsupported places behind. Roots and the firmer soil on either side had held much of the surface together until heavier loads passed over it.
Dana stood beside Tom on stable ground and gave him time to look. "This has been developing for a long time," she said. "It doesn't have to be wide open underneath every inch to cause trouble. Some of the soil has lost support. A wheel can break through one part, meet firm ground at the other, and send a shock through a machine."
"All three?" Tom asked.
"The locations and marks are consistent with it. We can examine the damaged components, but the ground gives us a common cause that the original reports were missing."
Tom watched Luis photograph the exposed section. The hole was not enormous by the standards of earthmoving work, and yet it appeared to him larger than any field he had ever farmed. He tried to imagine the amount of soil that had moved out of place one storm at a time, the number of seasons it took, the small chances his father had probably noticed before anyone else. His mind kept returning to the old support beam that had cracked on his first tractor. He had blamed the machine for failing without understanding that the field had asked it to do something no machine was meant to do.
Ray approached with the three inspection reports folded inside a plastic sleeve. He pointed toward the first breakdown location.
"Your old tractor's front wheel likely dropped near the edge of this weakened section. The support already had fatigue in it, and the sudden impact finished the crack. Gary's tire crossed another part of the lip, got pinched and struck hard enough to tear and deform the rim. The rental's drive wheel dropped and caught again, loading the driveline. Different parts took the punishment. Same ground."
Tom listened, then asked a question he had been avoiding since the first morning. "Could I have gone all the way through?"
Ray did not pretend the answer was easier than it was. "If the crust had failed under more of the tractor, yes. It could have been worse."
Dana added that a complete collapse under heavy equipment could cause a serious accident and that nobody should treat the area as safe until repairs had been completed and verified. Her voice was professional, but Tom heard the human meaning beneath it. He thought of Jenny waiting for him to come home, of the call he had almost made from the tractor's cab in anger, and of the foolish plan to keep driving simply because he could not bear to lose another day. He had been angry at the machines for stopping. He was suddenly grateful they had stopped where they did.