Sigurd Knolls
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Sigurd Knolls (miles (32 km) northwest of Drygalski Mountains in Queen Maud Land. Plotted from surveys and air photos by the Norwegian Antarctic Expedition (1956-60) and named for Sigurd Helle, geodesist and leader of Norwegian Antarctic Expedition (1956-60).
) is an isolated rock knolls at the north end of Otter Plain, about 20This article incorporates text from Sigurd Knolls, in the Geographic Names Information System, operated by the United States Geological Survey, and therefore a public domain work of the United States Government.