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. With the aim of unveiling evidence of Late Quaternary faulting, aseries of ground-penetrating radar (GPR) profiles were acquired across thesouthern portion of the Fosso della Valle–Campotenese normal fault (VCT),located at the Campotenese continental basin (Mt. Pollino region) in thesouthern Apennines active extensional belt (Italy). A set of 49 GPR profiles, traced nearly perpendicular to this normal fault, was acquired using 300 and 500 MHz antennas and carefully processed through a customized workflow.The data interpretation allowed us to reconstruct a pseudo-3D modeldepicting the boundary between the Mesozoic bedrock and the sedimentary fill of the basin, which were in close proximity to the fault. Once the GPR signature of faulting was reviewed and defined, we interpret near-surface alluvial and colluvial sediments dislocated by a set of conjugate (W- and E-dipping) discontinuities that penetrate inside the underlying Triassic dolostones.Close to the contact between the continental deposits and the bedrock, someburied scarps which offset wedge-shaped deposits are interpreted ascoseismic ruptures, subsequently sealed by later deposits. Our pseudo-3D GPRdataset represented a good trade-off between a dense 3D-GPR volume andconventional 2D data, which normally requires a higher degree ofsubjectivity during the interpretation. We have thus reconstructed a reliablesubsurface fault pattern, discriminating master faults and a series ofsecondary splays. This contribution better characterizes active Quaternaryfaults in an area which falls within the Pollino seismic gap and isconsidered prone to severe surface faulting. Our results encourage furtherresearch at the study site, whilst we also recommend our workflow forsimilar regions characterized by high seismic hazard and scarcity ofnear-surface geophysical data.

Ground-penetrating radar signature of Quaternary faulting: a study from the Mt. Pollino region, southern Apennines, Italy