Nicola, geophysical engineer, explains how we get subsoil data: “We get this data by transforming the vibrations from the ground into electrical signals. The signals are recorded and then transformed into these images of the subsoil. To do this we need algorithms and supercomputers, because there is so much data and it's a complex problem. With the computers of the nineties we were only able to get two-dimensional images. Now with HPC4, we can produce three-dimensional images, which for example can extend over around 700 square kilometres of surface ground and reach a depth of about 10 kilometres".