Sunken Rock is a sunken rock lying 0.2 nautical miles (0.4 km) north-northeast of Morgan Island, close off the north side of Heard Island. Surveyed and named by the ANARE (Australian National Antarctic Research Expeditions) in 1948.
This article incorporates public domain material from the United States Geological Survey document "Sunken Rock" (content from the Geographic Names Information System).
References
Sunken Rock Wikipedia(Text) CC BY-SA