In association with the Joint Technical Committee on Natural Slopes and Landslides (JTC1) and the Federation of International Geo-engineering Societies: ISSMGE,ISRM and IAEG (FedIGS), the Colombian Geotechnical Society-CGS cordially invites the international geotechnical community to participate in the XIII International Symposium on Landslides-XIII ISL, which will be held from June 15 to 19 – 2020 in the city of Cartagena-Colombia.