 Siefker Ridge

Siefker Ridge () is a rugged ridge 6 miles (10 km) long, extending northwest from the west part of Anderson Massif in the Heritage Range.Named by the University of Minnesota Geological Party to these mountains, 1963–64, for electronics technician Dennis R. Siefker, U.S. Navy, who was in charge of the automatic weather station at the party's camp at Camp Hills.Siege Dome

Siege Dome () is a small, ice-covered prominence standing to the south of the head of Hood Glacier, close southeast of Mount Patrick in the Commonwealth Range.