Name StatusOfficial ValidatedFeatureMountainsNZ Gazette Reference2012 (53) p.1477DatumRSRGD2000GeoTag PositionDescriptionA group of ragged foothills rising to about 1500m and lying just east of the mouth of Liv Glacier, fronting on the Ross Ice Shelf for a distance of about 18 miles. Discovered by the Byrd AE, 1928-30, in November 1929. Named for James Duncan, Manager of Tapley Ltd, shipping agents at Dunedin, New Zealand, who assisted the expedition. Bounded by the Ross Ice Shelf, the Liv and Strom Glaciers and a snow corridor linking the two glaciers. In plan form the shape of the letter H.