“…The complex network of streamlined corridors has also been interpreted as reflecting the paths of subglacial megafloods (e.g., Shaw, 1983;Rains et al, 1993;Shaw et al, 1996Shaw et al, , 2000Shaw et al, , 2010, rather than ice streams. This interpretation has been the subject of much debate (e.g., Benn and Evans, 2006;Evans, 2010;Shaw, 2010a, b;Evans et al, 2013;Shaw, 2013), which is yet to be fully resolved, not least because ice streams are typically associated with abundant subglacial meltwater that helps lubricate their flow. However, questions remain, for example, regarding the sources and volume of water required to feed putative mega-flood tracks (Clarke et al, 2005).…”