This manuscript presents valuable new data, arrives at potentially important conclusions regarding the timing of deglaciation of a very poorly known sector of the Antarctic continental shelf, and has important implications for deep water formation during the last glacial and deglacial periods. However, the manuscript structure, language, discussion and presentation need some attention before publication. Some method details are unclear or missing, as is some information that ought to be presented on figures.

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The manuscript presents important new constraints on the deglaciation history of the Mac. Robertson Shelf (East Antarctica), through high‑resolution geomorphological mapping and new radiocarbon dating indicating that the grounding line likely remained near the shelf edge until in very late glacial time (12.5 ka BP). The integration of sedimentological proxies with detailed bathymetry is a major strength and provides a case for extensive glaciation during the Last Glacial Maximum. However, the chronology contains uncertainties, particularly regarding the interpretation of AIO versus foraminiferal ages and the potential reworking of older specimens, that should be more thoroughly addressed. Strengthening the discussion of plausible oceanographic mechanisms capable of delivering modified Circumpolar Deep Water across a dense‑shelf regime would also further reinforce the study’s conclusions.