Onnum Ridge (80°7′S 156°25′E) is a mountain spur that descends northeast to McCraw Glacier, 3 nautical miles (6 km) south of Derrick Peak in the Britannia Range. Named in association with Britannia by a University of Waikato (N.Z.), geological party, 1978–79, led by M.J. Selby. Onnum is a historical placename formerly used in Roman Britain.
This article incorporates public domain material from the United States Geological Survey document "Onnum Ridge" (content from the Geographic Names Information System).
References
Onnum Ridge Wikipedia(Text) CC BY-SA