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Reflection seismic data were acquired along a c. 23km long profile over the Pärvie Fault system with a nominal receiver and source spacing of 20m. An hydraulic breaking hammer was used as a source, generating signals with a penetration depth of about 5–6km. Steeply dipping reflections from the end-glacial faults are observed, as well as sub-horizontal reflections. The location and orientation of the reflections from the faults agree well with surface geological observations of fault geometries. Reflections from a potential fourth end-glacial fault is observed further to the east along the profile. The more sub-horizontal reflections may originate from gabbroic bodies within the granitic basement or from deeper lying greenstones. Our results indicate that the end-glacial faults dip at moderate to steep dips down to at least 2–3km depth, and possibly continue at this dip to depths of 6km. This result has significant …