From the 9-16 November 2018, M. Jaboyedoff visited at LERN University of Laval Prof Locat, Dr A. Blais-Stevens, Dr C. Cloutier and Dr D. Turmel to focus on our project of book in French about Landslides which will contain approximately 30 authors and have 33 chapters. Two third of the chapter are now written in their first version.