SALTGIANT is a rare cross-disciplinary network of natural and social scientists dedicated to understanding the formation of the Mediterranean Salt Giant, one of the largest salt deposits on Earth, and its implications for sub-seafloor microbial life, risk assessment in the oil industry, geo-economics of the Mediterranean region and the history of oceanography. SALTGIANT brings together 24 academic organizations (13 beneficiaries, 11 partners), 6 private sector Oil&Gas companies, 2 mining sector companies, 1 biotechnology company, 1 geopolitics think tank, 1 museum and 1 specialist in transferable skills training from 11 countries to stimulate interdisciplinary and intersectorial knowledge exchange between geologists, geophysicists, geochemists, microbiologist, geographers and historians in a network with PhD students at its core. SALTGIANT combines (i) geological and geochemical field work, (ii) laboratory measurements and experiments, (iii) numerical modelling at a wide range of spatial and temporal scales and (iv) empirical social sciences data collection and analysis, guaranteeing exposure of the research fellows to state-of-the-art scientific knowledge and hands-on practical training in a field rich in applications of both intellectual and societal relevance.