Onnum Ridge

Onnum Ridge (

80°7′S 156°25′E / 80.117°S 156.417°E / -80.117; 156.417Coordinates: 80°7′S 156°25′E / 80.117°S 156.417°E / -80.117; 156.417) 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 Michael 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)