A free 3day online workshop on Ground Penetrating Radar modelling using gprMax, 2931 July 2020. Hosted by Dr Craig Warren (Northumbria University, UK), Dr Antonis Giannopoulos (University of Edinburgh, UK), and Dr Iraklis Giannakis (University of Aberdeen, UK). Day 1 Welcome from the hosts and introduction by the invited speakers. The full programme is available here