Pre-conference excursion, from Poitiers to Les Eyzies (September 16th): The impact sites of Chassenon-Rochechouart resulted from the fall of an asteroid in Triassic times. Molten and brecciated rocks, observed by Desmaret in 1773, were long taken for volcanic rocks, and remained a geological enigma until the 1960s, when the impact origin was recognized.
- Post-conference excursion, from Les Eyzies to Bordeaux (September 22st to 26th): The Vézère Valley and other prehistoric sites further south, in Périgord and Quercy (Pech Merle and Cougnac caves), will be visited. The excursion will end with the Miocene sites of the Bordeaux region: Sainte-Croix-du-Mont (visited by King Louis XIII and scientifically studied since 1622); the Saucats and La Brède Natural Geological Reserve (historical stratotypes of the Burdigalian and Aquitanian). Some Bordeaux vineyards and cellars will also be on the program.