Эребус
Grazyna Bluff () is a rock bluff rising to about in the south part of Turks Head Ridge, Ross Island. The bluff is north-northeast of Turks Head. At the suggestion of P.R. Kyle it was named by the Advisory Committee on Antarctic Names (2000) after Grazyna Zreda-Gostynska, who worked on Mount Erebus in 1989–90 as a member of the New Mexico Institute of Mining and Technology (NMIMT) team. A Ph.D. student at NMIMT, she completed her doctoral dissertation on the gas emissions from Mount Erebus.