Trmun (north-eastern Italy): Multi-scale remote and ground-based sensing of a Bronze Age and post-Roman fortification

•Remote and ground-based sensing was applied to investigate an archaeological site.•3D identification of topographic archaeological anomalies and buried features.•An almost perfect match between remote sensing data and excavation evidence.•Discovery of a Bronze Age fortification and post-Roman towers.•Remote sensing is crucial to detect, monitor and manage cultural heritage.