Much of the east side of the peninsula is a line of precipitous basalt cliffs rising to , known as the Downshire Cliffs. Captain Ross applied the name Cape Downshire to a part of these cliffs at the request of Commander Francis R.M. Crozier of the . No prominent cape exists here but for the sake of historical continuity, the name has been reapplied to these cliffs. Nestling Rock lies in the sea just south of the north portion of Adare Peninsula. The descriptive name applied by NZ-APC suggests the location of this relatively small feature beside the towering Downshire Cliffs.