It was mapped by Norwegian cartographers from air photos taken by the Lars Christensen Expedition, 1936–37, and was named by the Antarctic Names Committee of Australia for P.J.
McGrath, a radio officer at Mawson Station who assisted in the Australian National Antarctic Research Expeditions' Framnes Mountains – Depot Peak survey during 1965.
[1] This article incorporates public domain material from "McGrath Nunatak".
Geographic Names Information System.
Robertson Land location article is a stub.