Sentinel Buttress (64°4′S 58°8′W / 64.067°S 58.133°W) is a prominent crag containing a volcanic breccia sequence, rising to 535 m east of Palisade Nunatak at the head of Rohss Bay, James Ross Island. So named by the United Kingdom Antarctic Place-Names Committee (UK-APC) in 1987 from its commanding position in the area.
This article incorporates public domain material from "Sentinel Buttress". Geographic Names Information System. United States Geological Survey.
