Sonntag Nunatak
Sonntag Nunatak is a solitary nunatak located 20 nautical miles (37 km; 23 mi) east-northeast of Hamilton Cliff, Ford Massif, of the Thiel Mountains. The nunatak was observed on December 13, 1959, by Edward Thiel and in the course of a United States Antarctic Research Program (USARP) airlifted geophysical traverse along the 88th meridian West. The name was proposed by Thiel and Craddock for , Operations Director at the Geophysical Institute, University of Wisconsin, 1959–61, logistics officer for the airlifted traverse.
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This article incorporates public domain material from the United States Geological Survey document: "Sonntag Nunatak". (content from the Geographic Names Information System) 
Coordinates: 84°53′S 86°42′W / 84.883°S 86.700°W
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