Name StatusApproved: NZGB Antarctic CommitteeFeatureCliffNZ Gazette Reference2009 (77) p.1803DatumRSRGD2000GeoTag[1] PositionDescriptionA north-facing rock and ice cliff, about 4 mi long, situated just NW of Mount Walton in the Outback Nunataks. Mapped by USGS from surveys and U.S. Navy air photos, 1959-64. Named by US-ACAN for Hain Oona, ionospheric physicist at South Pole Station, 1968.
