Late Weichselian maximum ice covered the entire Barents Sea continental shelf and a major ice stream delivered large amounts of glacial debris to the western slope (Fig. 1a). During deglaciation, one of several dynamic components of the ice sheet occupied Djuprenna, a glacially eroded trough offshore of the northernmost coast of mainland Norway (Fig. 1a). Mega-scale glacial lineations (MSGLs) indicate major ice flow when the main ice source had shifted eastwards and most of the SW Barents Sea was ice free (e.g. Ottesen et al. 2008). Spectacular seabed pits with adjacent crescentic hills are imaged on multibeam bathymetry of Djuprenna. Although morphologically similar to hill–hole pairs formed by glacitectonic processes (e.g. Sættem 1990) some critical differences suggest another genesis. Seafloor features of this type are probably uncommon and, to our knowledge, have not been described previously.