The final line in the notebook read return when the shadow is short. The surveyor died before explaining it, and his apprentice, Kit, assumed the instruction concerned a difficult measurement. She carried the instruments out before sunrise and waited beside the marker.
Nothing in the recorded figures required that hour. As the sun rose, the marker's shadow withdrew from a small inscription at its base. A name and a year became legible where salt had collected in the grooves. The surveyor had written about the inscription on an earlier page, noting that he could not read its last digit.
Kit compared the pencil rubbing with a family letter donated to the local archive. The marker commemorated a colleague, not a boundary. Its apparent date had been distorted by a chipped edge. She photographed it in the new light and returned without changing any measurements.
On a fresh page, she completed the observation and signed her own name. Her teacher's last line remained an instruction rather than a prophecy. It had sent her back to look under better conditions, which was exactly the sort of lesson he preferred not to explain twice.