Invited Lectures of the 15th PanAmerican Conference on Soil Mechanics and Geotechnical Engineering . In November 2015, Buenos Aires, Argentina became the location of several important events for geo-professionals, with the simultaneous holding of the 15th Pan-American Conference on Soil Mechanics and Geotechnical Engineering XV PCSMGE, the 8th South American Congress on Rock Mechanics SCRM and the 6th International Symposium on Deformation Characteristics of Geomaterials, as well as the 22nd Argentinean Congress of Geotechnical Engineering CAMSIGXXII. This synergy brought together international experts, researchers, academics, sakriti opis