 The Loco dei Marci dsgsd is the first example of a structurally controlled dsgsd in the Aponines with a well-defined basal shear zone. This dsgsd was caused by the presence of an intensely jointed stratigraphic level which acted as a predisposing factor for the gravitational deformation. This article was authored by Marco Emanuele Duchenza, Emiliano De Lucio, Salvatore Martino, and others.