This second interim report contains the latest research on the Walou Cave at Trooz. Excavations have revealed rich material dating from the Middle Palaeolithic up to the Neolithic. The chapters here focus on the avifauna, the Creswello-Tjongerian flint, the Gravettian flint, micromammals, ichtyology, malacology, animal palaeopathology, and the Gravettian assegai point from the cave of Fronds-de-Foret. Further volumes will focus on the Neolithic finds. French text.