The Royal SocietyInternational Geophysical Year expeditions occupied Halley Research Station nearby (1955–59) and were familiar with this feature, reporting in 1957 that the maximum elevation above the general surface of the ice shelf, a few hundred metres from the ice front, was about 18 metres (60ft). It has now been identified with "Allan McDonald Glacier" and, for the sake of historical continuity, the UK Antarctic Place-names Committee has given the name McDonald to these ice rumples.[1]