In August 2018, Bruno Thommeray-Dumay discovered an atypical stump left over from the 1999 storm. Its square cross-section caught his eye. He contacted Marie-Christine Trouy, lecturer at the University of Lorraine, teacher at the École nationale supérieure des technologies et industries du bois (ENSTIB), and researcher at the Laboratoire d’étude et de recherche sur le matériau bois (LERMAB). She is also the author of “Anatomie du bois”, published by Quae.