So named by New Zealand Geological Survey Antarctic Expedition (NZGSAE), 1969-70, because of the occurrence of large, whitish pegmatite dykes in a rock wall at the SE spur of the peak.

Though steep on both sides and 970 metres (3,180 ft) high, the col provides a good route through Medina Peaks.

A col in the north part of Medina Peaks, about 3.5 nautical miles (6.5 km; 4.0 mi) southwest of Marks Point, that allows a quick sledging route between the lower Amundsen and Scott Glaciers.

The col was explored by NZGSAE, 1969-70, and so named because it is hidden behind ridges and spurs of the peaks to the northeast and southwest of it.

A rock point extending east from the north end of Medina Peaks, at the south edge of the Ross Ice Shelf.

Named by US-ACAN for George R. Marks, logistics worker at McMurdo Station, winter party, 1962.

The peak was examined by members of NZGSAE, 1969-70, and so named because of the colorful yellow, pink and brown banded strata that mark the feature.

A low ridge that parallels the coast at the head of Ross Ice Shelf, located east of Amundsen Glacier and midway between MacDonald Nunataks and O'Brien Peak.

Two nunataks overlooking the head of the Ross Ice Shelf, standing just east of the terminus of Amundsen Glacier, 5 nautical miles (9.3 km; 5.8 mi) west of O'Brien Peak.

[12] This article incorporates public domain material from websites or documents of the United States Geological Survey.