Ronald K. McGregor, United States Navy, leader of Antarctic Support Activities at McMurdo Station, winter party 1962.

Named by US-ACAN for Chief Warrant Officer John D. Brazil, United States Army, helicopter pilot supporting the USGS Topo North-South party that surveyed the area, 1961–62.

A rock bluff just west of McGregor Range, at the junction of the Tucker and Leander Glaciers.

Climbed by the geological team of the NZGSAE, 1957-58, in January 1958, and named from association with Shadow Bluff and nearby Mount Midnight.

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