Imaging skeletal remains with ground-penetrating radar: comparative results over two graves from Viking Age and Medieval churchyards on the Stóra-Seyla farm, northern Iceland

► Detected previously unknown Viking Age churchyard using GPR. ► The first time geophysics has been used to detect such a feature in Iceland. ► Orientation of skeletal remains determined by width of hyperbolas. ► Skeletal remains including chest cavity and long bones were detected. ► Air-filled void in chest cavity produced normal polarity banding.