Name StatusOfficial ValidatedFeatureHillNZ Gazette Reference2012 (53) p.1477DatumRSRGD2000GeoTag[1] PositionDescriptionA prominent hill, 400m high, overlooking the Adelie Penguin rookery at Cape Crozier, Ross Island, and approximately four miles north-west of The Knoll, and half a mile inland from the coast. A survey station was established in the 1958-59 season by the NZGSAE. Named because the "Discovery" left messages attached to a pole in a cairn of rocks in the rookery, for the relief ship "Morning". The hill is dome-shaped and resembles the old type of post office box. Name suggested by Mr E B Fitzgerald of the NZGASE, 1958-59.