3D visualization of a reactive diapiric wall with a complex pattern of en-echelon faults forming a crestal graben on the seafloor above it. 3D visualization of a reactive diapiric wall with young active faults bounding the crestal graben and older (inactive) buried faults on the flanks. These were active as crestal-graben faults in the past. Crestal-graben faulting is a key component of reactive diapir growth.